python: Sort imports with isort.

Fixes #2665.

Regenerated by tabbott with `lint --fix` after a rebase and change in
parameters.

Note from tabbott: In a few cases, this converts technical debt in the
form of unsorted imports into different technical debt in the form of
our largest files having very long, ugly import sequences at the
start.  I expect this change will increase pressure for us to split
those files, which isn't a bad thing.

Signed-off-by: Anders Kaseorg <anders@zulip.com>

analytics/lib/counts.py

@@ -1,23 +1,35 @@
+import logging
 import time
 from collections import OrderedDict, defaultdict
 from datetime import datetime, timedelta
-import logging
-from typing import Callable, Dict, List, \
-    Optional, Tuple, Type, Union
+from typing import Callable, Dict, List, Optional, Tuple, Type, Union
 
 from django.conf import settings
 from django.db import connection
 from django.db.models import F
-from psycopg2.sql import Composable, Identifier, Literal, SQL
+from psycopg2.sql import SQL, Composable, Identifier, Literal
 
-from analytics.models import BaseCount, \
-    FillState, InstallationCount, RealmCount, StreamCount, \
-    UserCount, installation_epoch, last_successful_fill
+from analytics.models import (
+    BaseCount,
+    FillState,
+    InstallationCount,
+    RealmCount,
+    StreamCount,
+    UserCount,
+    installation_epoch,
+    last_successful_fill,
+)
 from zerver.lib.logging_util import log_to_file
-from zerver.lib.timestamp import ceiling_to_day, \
-    ceiling_to_hour, floor_to_hour, verify_UTC
-from zerver.models import Message, Realm, RealmAuditLog, \
-    Stream, UserActivityInterval, UserProfile, models
+from zerver.lib.timestamp import ceiling_to_day, ceiling_to_hour, floor_to_hour, verify_UTC
+from zerver.models import (
+    Message,
+    Realm,
+    RealmAuditLog,
+    Stream,
+    UserActivityInterval,
+    UserProfile,
+    models,
+)
 
 ## Logging setup ##
 

analytics/lib/fixtures.py

@@ -4,6 +4,7 @@ from typing import List
 
 from analytics.lib.counts import CountStat
 
+
 def generate_time_series_data(days: int=100, business_hours_base: float=10,
                               non_business_hours_base: float=10, growth: float=1,
                               autocorrelation: float=0, spikiness: float=1,

analytics/lib/time_utils.py

@@ -4,6 +4,7 @@ from typing import List, Optional
 from analytics.lib.counts import CountStat
 from zerver.lib.timestamp import floor_to_day, floor_to_hour, verify_UTC
 
+
 # If min_length is None, returns end_times from ceiling(start) to floor(end), inclusive.
 # If min_length is greater than 0, pads the list to the left.
 # So informally, time_range(Sep 20, Sep 22, day, None) returns [Sep 20, Sep 21, Sep 22],

analytics/management/commands/check_analytics_state.py

@@ -8,8 +8,7 @@ from django.utils.timezone import now as timezone_now
 
 from analytics.lib.counts import COUNT_STATS, CountStat
 from analytics.models import installation_epoch, last_successful_fill
-from zerver.lib.timestamp import TimezoneNotUTCException, floor_to_day, \
-    floor_to_hour, verify_UTC
+from zerver.lib.timestamp import TimezoneNotUTCException, floor_to_day, floor_to_hour, verify_UTC
 from zerver.models import Realm
 
 states = {

analytics/management/commands/populate_analytics_db.py

@@ -1,21 +1,25 @@
 from datetime import timedelta
 from typing import Any, Dict, List, Mapping, Optional, Type
-
 from unittest import mock
+
 from django.core.management.base import BaseCommand
 from django.utils.timezone import now as timezone_now
 
-from analytics.lib.counts import COUNT_STATS, CountStat, \
-    do_drop_all_analytics_tables
+from analytics.lib.counts import COUNT_STATS, CountStat, do_drop_all_analytics_tables
 from analytics.lib.fixtures import generate_time_series_data
 from analytics.lib.time_utils import time_range
-from analytics.models import BaseCount, FillState, InstallationCount, \
-    RealmCount, StreamCount, UserCount
+from analytics.models import (
+    BaseCount,
+    FillState,
+    InstallationCount,
+    RealmCount,
+    StreamCount,
+    UserCount,
+)
 from zerver.lib.actions import STREAM_ASSIGNMENT_COLORS, do_change_user_role
 from zerver.lib.create_user import create_user
 from zerver.lib.timestamp import floor_to_day
-from zerver.models import Client, Realm, Recipient, Stream, Subscription, \
-    UserProfile
+from zerver.models import Client, Realm, Recipient, Stream, Subscription, UserProfile
 
 
 class Command(BaseCommand):

analytics/management/commands/realm_stats.py

@@ -6,8 +6,17 @@ from django.core.management.base import BaseCommand, CommandError
 from django.db.models import Count
 from django.utils.timezone import now as timezone_now
 
-from zerver.models import Message, Realm, Recipient, Stream, Subscription, \
-    UserActivity, UserMessage, UserProfile, get_realm
+from zerver.models import (
+    Message,
+    Realm,
+    Recipient,
+    Stream,
+    Subscription,
+    UserActivity,
+    UserMessage,
+    UserProfile,
+    get_realm,
+)
 
 MOBILE_CLIENT_LIST = ["Android", "ios"]
 HUMAN_CLIENT_LIST = MOBILE_CLIENT_LIST + ["website"]

analytics/management/commands/stream_stats.py

@@ -4,8 +4,7 @@ from typing import Any
 from django.core.management.base import BaseCommand, CommandError
 from django.db.models import Q
 
-from zerver.models import Message, Realm, Recipient, Stream, Subscription, \
-    get_realm
+from zerver.models import Message, Realm, Recipient, Stream, Subscription, get_realm
 
 
 class Command(BaseCommand):

analytics/management/commands/update_analytics_counts.py

@@ -1,8 +1,8 @@
 import os
 import time
 from argparse import ArgumentParser
-from typing import Any, Dict
 from datetime import timezone
+from typing import Any, Dict
 
 from django.conf import settings
 from django.core.management.base import BaseCommand

analytics/migrations/0015_clear_duplicate_counts.py

@@ -3,6 +3,7 @@ from django.db.backends.postgresql.schema import DatabaseSchemaEditor
 from django.db.migrations.state import StateApps
 from django.db.models import Count, Sum
 
+
 def clear_duplicate_counts(apps: StateApps, schema_editor: DatabaseSchemaEditor) -> None:
     """This is a preparatory migration for our Analytics tables.
 

analytics/models.py

@@ -7,6 +7,7 @@ from django.db.models import Q, UniqueConstraint
 from zerver.lib.timestamp import floor_to_day
 from zerver.models import Realm, Stream, UserProfile
 
+
 class FillState(models.Model):
     property: str = models.CharField(max_length=40, unique=True)
     end_time: datetime.datetime = models.DateTimeField()

analytics/tests/test_counts.py

@@ -1,7 +1,7 @@
 from datetime import datetime, timedelta, timezone
 from typing import Any, Dict, List, Optional, Tuple, Type
-
 from unittest import mock
+
 import ujson
 from django.apps import apps
 from django.db import models
@@ -10,24 +10,58 @@ from django.test import TestCase
 from django.utils.timezone import now as timezone_now
 from psycopg2.sql import SQL, Literal
 
-from analytics.lib.counts import COUNT_STATS, CountStat, get_count_stats, \
-    DependentCountStat, LoggingCountStat, do_aggregate_to_summary_table, \
-    do_drop_all_analytics_tables, do_drop_single_stat, \
-    do_fill_count_stat_at_hour, do_increment_logging_stat, \
-    process_count_stat, sql_data_collector
-from analytics.models import BaseCount, \
-    FillState, InstallationCount, RealmCount, StreamCount, \
-    UserCount, installation_epoch
-from zerver.lib.actions import do_activate_user, do_create_user, \
-    do_deactivate_user, do_reactivate_user, update_user_activity_interval, \
-    do_invite_users, do_revoke_user_invite, do_resend_user_invite_email, \
-    InvitationError
+from analytics.lib.counts import (
+    COUNT_STATS,
+    CountStat,
+    DependentCountStat,
+    LoggingCountStat,
+    do_aggregate_to_summary_table,
+    do_drop_all_analytics_tables,
+    do_drop_single_stat,
+    do_fill_count_stat_at_hour,
+    do_increment_logging_stat,
+    get_count_stats,
+    process_count_stat,
+    sql_data_collector,
+)
+from analytics.models import (
+    BaseCount,
+    FillState,
+    InstallationCount,
+    RealmCount,
+    StreamCount,
+    UserCount,
+    installation_epoch,
+)
+from zerver.lib.actions import (
+    InvitationError,
+    do_activate_user,
+    do_create_user,
+    do_deactivate_user,
+    do_invite_users,
+    do_reactivate_user,
+    do_resend_user_invite_email,
+    do_revoke_user_invite,
+    update_user_activity_interval,
+)
 from zerver.lib.create_user import create_user
 from zerver.lib.timestamp import TimezoneNotUTCException, floor_to_day
 from zerver.lib.topic import DB_TOPIC_NAME
-from zerver.models import Client, Huddle, Message, Realm, \
-    RealmAuditLog, Recipient, Stream, UserActivityInterval, \
-    UserProfile, get_client, get_user, PreregistrationUser
+from zerver.models import (
+    Client,
+    Huddle,
+    Message,
+    PreregistrationUser,
+    Realm,
+    RealmAuditLog,
+    Recipient,
+    Stream,
+    UserActivityInterval,
+    UserProfile,
+    get_client,
+    get_user,
+)
+
 
 class AnalyticsTestCase(TestCase):
     MINUTE = timedelta(seconds = 60)

analytics/tests/test_fixtures.py

@@ -2,6 +2,7 @@ from analytics.lib.counts import CountStat
 from analytics.lib.fixtures import generate_time_series_data
 from zerver.lib.test_classes import ZulipTestCase
 
+
 # A very light test suite; the code being tested is not run in production.
 class TestFixtures(ZulipTestCase):
     def test_deterministic_settings(self) -> None:

analytics/tests/test_views.py

@@ -1,24 +1,21 @@
 from datetime import datetime, timedelta, timezone
 from typing import List, Optional
-
 from unittest import mock
-from django.http import HttpResponse
+
 import ujson
+from django.http import HttpResponse
 from django.utils.timezone import now as timezone_now
 
 from analytics.lib.counts import COUNT_STATS, CountStat
 from analytics.lib.time_utils import time_range
-from analytics.models import FillState, \
-    RealmCount, UserCount, last_successful_fill
-from analytics.views import rewrite_client_arrays, \
-    sort_by_totals, sort_client_labels
-from zerver.lib.test_helpers import reset_emails_in_zulip_realm
+from analytics.models import FillState, RealmCount, UserCount, last_successful_fill
+from analytics.views import rewrite_client_arrays, sort_by_totals, sort_client_labels
+from zerver.lib.actions import do_create_multiuse_invite_link, do_send_realm_reactivation_email
 from zerver.lib.test_classes import ZulipTestCase
-from zerver.lib.timestamp import ceiling_to_day, \
-    ceiling_to_hour, datetime_to_timestamp
-from zerver.lib.actions import do_create_multiuse_invite_link, \
-    do_send_realm_reactivation_email
-from zerver.models import Client, get_realm, MultiuseInvite
+from zerver.lib.test_helpers import reset_emails_in_zulip_realm
+from zerver.lib.timestamp import ceiling_to_day, ceiling_to_hour, datetime_to_timestamp
+from zerver.models import Client, MultiuseInvite, get_realm
+
 
 class TestStatsEndpoint(ZulipTestCase):
     def test_stats(self) -> None:

analytics/views.py

@@ -6,54 +6,75 @@ import urllib
 from collections import defaultdict
 from datetime import datetime, timedelta, timezone
 from decimal import Decimal
-
-from typing import Any, Callable, Dict, List, \
-    Optional, Set, Tuple, Type, Union
+from typing import Any, Callable, Dict, List, Optional, Set, Tuple, Type, Union
 
 import pytz
 from django.conf import settings
-from django.urls import reverse
+from django.core.exceptions import ValidationError
+from django.core.validators import URLValidator
 from django.db import connection
 from django.db.models.query import QuerySet
 from django.http import HttpRequest, HttpResponse, HttpResponseNotFound
 from django.shortcuts import render
 from django.template import loader
+from django.urls import reverse
+from django.utils.timesince import timesince
 from django.utils.timezone import now as timezone_now
 from django.utils.translation import ugettext as _
-from django.utils.timesince import timesince
-from django.core.validators import URLValidator
-from django.core.exceptions import ValidationError
 from jinja2 import Markup as mark_safe
-from psycopg2.sql import Composable, Literal, SQL
+from psycopg2.sql import SQL, Composable, Literal
 
 from analytics.lib.counts import COUNT_STATS, CountStat
 from analytics.lib.time_utils import time_range
-from analytics.models import BaseCount, InstallationCount, \
-    RealmCount, StreamCount, UserCount, last_successful_fill, installation_epoch
-from confirmation.models import Confirmation, confirmation_url, _properties
-from zerver.decorator import require_server_admin, require_server_admin_api, \
-    to_utc_datetime, zulip_login_required, require_non_guest_user
+from analytics.models import (
+    BaseCount,
+    InstallationCount,
+    RealmCount,
+    StreamCount,
+    UserCount,
+    installation_epoch,
+    last_successful_fill,
+)
+from confirmation.models import Confirmation, _properties, confirmation_url
+from confirmation.settings import STATUS_ACTIVE
+from zerver.decorator import (
+    require_non_guest_user,
+    require_server_admin,
+    require_server_admin_api,
+    to_utc_datetime,
+    zulip_login_required,
+)
+from zerver.lib.actions import (
+    do_change_plan_type,
+    do_deactivate_realm,
+    do_scrub_realm,
+    do_send_realm_reactivation_email,
+)
 from zerver.lib.exceptions import JsonableError
+from zerver.lib.realm_icon import realm_icon_url
 from zerver.lib.request import REQ, has_request_variables
 from zerver.lib.response import json_success
-from zerver.lib.timestamp import convert_to_UTC, timestamp_to_datetime
-from zerver.lib.realm_icon import realm_icon_url
-from zerver.views.invite import get_invitee_emails_set
 from zerver.lib.subdomains import get_subdomain_from_hostname
-from zerver.lib.actions import do_change_plan_type, do_deactivate_realm, \
-    do_send_realm_reactivation_email, do_scrub_realm
+from zerver.lib.timestamp import convert_to_UTC, timestamp_to_datetime
 from zerver.lib.validator import to_non_negative_int
-from confirmation.settings import STATUS_ACTIVE
+from zerver.views.invite import get_invitee_emails_set
 
 if settings.BILLING_ENABLED:
     from corporate.lib.stripe import attach_discount_to_realm, get_discount_for_realm
 
-from zerver.models import Client, get_realm, Realm, UserActivity, UserActivityInterval, \
-    UserProfile, PreregistrationUser, MultiuseInvite
+from zerver.models import (
+    Client,
+    MultiuseInvite,
+    PreregistrationUser,
+    Realm,
+    UserActivity,
+    UserActivityInterval,
+    UserProfile,
+    get_realm,
+)
 
 if settings.ZILENCER_ENABLED:
-    from zilencer.models import RemoteInstallationCount, RemoteRealmCount, \
-        RemoteZulipServer
+    from zilencer.models import RemoteInstallationCount, RemoteRealmCount, RemoteZulipServer
 else:
     from unittest.mock import Mock
     RemoteInstallationCount = Mock()  # type: ignore[misc] # https://github.com/JukkaL/mypy/issues/1188

confirmation/migrations/0001_initial.py

@@ -1,5 +1,5 @@
-from django.db import models, migrations
 import django.db.models.deletion
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):

confirmation/migrations/0002_realmcreationkey.py

@@ -1,5 +1,5 @@
-from django.db import models, migrations
 import django.utils.timezone
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):

confirmation/migrations/0005_confirmation_realm.py

@@ -1,7 +1,6 @@
 # Generated by Django 1.11.6 on 2017-11-30 00:13
-
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):

confirmation/models.py

@@ -1,24 +1,23 @@
 # Copyright: (c) 2008, Jarek Zgoda <jarek.zgoda@gmail.com>
 
 __revision__ = '$Id: models.py 28 2009-10-22 15:03:02Z jarek.zgoda $'
-
 import datetime
+import string
+from random import SystemRandom
+from typing import Dict, Optional, Union
 
+from django.conf import settings
+from django.contrib.contenttypes.fields import GenericForeignKey
+from django.contrib.contenttypes.models import ContentType
 from django.db import models
 from django.db.models import CASCADE
-from django.urls import reverse
-from django.conf import settings
-from django.contrib.contenttypes.models import ContentType
-from django.contrib.contenttypes.fields import GenericForeignKey
 from django.http import HttpRequest, HttpResponse
 from django.shortcuts import render
+from django.urls import reverse
 from django.utils.timezone import now as timezone_now
 
-from zerver.models import PreregistrationUser, EmailChangeStatus, MultiuseInvite, \
-    UserProfile, Realm
-from random import SystemRandom
-import string
-from typing import Dict, Optional, Union
+from zerver.models import EmailChangeStatus, MultiuseInvite, PreregistrationUser, Realm, UserProfile
+
 
 class ConfirmationKeyException(Exception):
     WRONG_LENGTH = 1

corporate/lib/stripe.py

@@ -1,26 +1,31 @@
-from datetime import datetime, timedelta
-from decimal import Decimal
-from functools import wraps
 import logging
 import math
 import os
-from typing import Any, Callable, Dict, Optional, TypeVar, Tuple, cast
-import ujson
+from datetime import datetime, timedelta
+from decimal import Decimal
+from functools import wraps
+from typing import Any, Callable, Dict, Optional, Tuple, TypeVar, cast
 
-from django.conf import settings
-from django.db import transaction
-from django.utils.translation import ugettext as _
-from django.utils.timezone import now as timezone_now
-from django.core.signing import Signer
 import stripe
+import ujson
+from django.conf import settings
+from django.core.signing import Signer
+from django.db import transaction
+from django.utils.timezone import now as timezone_now
+from django.utils.translation import ugettext as _
 
+from corporate.models import (
+    Customer,
+    CustomerPlan,
+    LicenseLedger,
+    get_current_plan_by_customer,
+    get_current_plan_by_realm,
+    get_customer_by_realm,
+)
 from zerver.lib.logging_util import log_to_file
 from zerver.lib.timestamp import datetime_to_timestamp, timestamp_to_datetime
 from zerver.lib.utils import generate_random_token
-from zerver.models import Realm, UserProfile, RealmAuditLog
-from corporate.models import Customer, CustomerPlan, LicenseLedger, \
-    get_current_plan_by_customer, get_customer_by_realm, \
-    get_current_plan_by_realm
+from zerver.models import Realm, RealmAuditLog, UserProfile
 from zproject.config import get_secret
 
 STRIPE_PUBLISHABLE_KEY = get_secret('stripe_publishable_key')

corporate/models.py

@@ -7,6 +7,7 @@ from django.db.models import CASCADE
 
 from zerver.models import Realm
 
+
 class Customer(models.Model):
     realm: Realm = models.OneToOneField(Realm, on_delete=CASCADE)
     stripe_customer_id: str = models.CharField(max_length=255, null=True, unique=True)

corporate/tests/test_stripe.py

@@ -1,43 +1,66 @@
-from datetime import datetime, timedelta, timezone
-from decimal import Decimal
-from functools import wraps
-from unittest.mock import Mock, patch
+import json
 import operator
 import os
 import re
 import sys
-from typing import Any, Callable, Dict, List, Optional, TypeVar, Tuple, cast
-import ujson
-import json
-import responses
+from datetime import datetime, timedelta, timezone
+from decimal import Decimal
+from functools import wraps
+from typing import Any, Callable, Dict, List, Optional, Tuple, TypeVar, cast
+from unittest.mock import Mock, patch
 
-from django.core import signing
-from django.urls.resolvers import get_resolver
-from django.http import HttpResponse
+import responses
+import stripe
+import ujson
 from django.conf import settings
+from django.core import signing
+from django.http import HttpResponse
+from django.urls.resolvers import get_resolver
 from django.utils.timezone import now as timezone_now
 
-import stripe
-
-from zerver.lib.actions import do_deactivate_user, do_create_user, \
-    do_activate_user, do_reactivate_user, do_deactivate_realm, \
-    do_reactivate_realm
+from corporate.lib.stripe import (
+    MAX_INVOICED_LICENSES,
+    MIN_INVOICED_LICENSES,
+    BillingError,
+    StripeCardError,
+    add_months,
+    attach_discount_to_realm,
+    catch_stripe_errors,
+    compute_plan_parameters,
+    get_discount_for_realm,
+    get_latest_seat_count,
+    invoice_plan,
+    invoice_plans_as_needed,
+    make_end_of_cycle_updates_if_needed,
+    next_month,
+    process_initial_upgrade,
+    sign_string,
+    stripe_get_customer,
+    unsign_string,
+    update_license_ledger_for_automanaged_plan,
+    update_license_ledger_if_needed,
+    update_or_create_stripe_customer,
+)
+from corporate.models import (
+    Customer,
+    CustomerPlan,
+    LicenseLedger,
+    get_current_plan_by_customer,
+    get_current_plan_by_realm,
+    get_customer_by_realm,
+)
+from zerver.lib.actions import (
+    do_activate_user,
+    do_create_user,
+    do_deactivate_realm,
+    do_deactivate_user,
+    do_reactivate_realm,
+    do_reactivate_user,
+)
 from zerver.lib.test_classes import ZulipTestCase
 from zerver.lib.test_helpers import reset_emails_in_zulip_realm
-from zerver.lib.timestamp import timestamp_to_datetime, datetime_to_timestamp
-from zerver.models import Realm, UserProfile, get_realm, RealmAuditLog
-from corporate.lib.stripe import catch_stripe_errors, attach_discount_to_realm, \
-    get_latest_seat_count, sign_string, unsign_string, \
-    BillingError, StripeCardError, stripe_get_customer, \
-    MIN_INVOICED_LICENSES, MAX_INVOICED_LICENSES, \
-    add_months, next_month, \
-    compute_plan_parameters, update_or_create_stripe_customer, \
-    process_initial_upgrade, make_end_of_cycle_updates_if_needed, \
-    update_license_ledger_if_needed, update_license_ledger_for_automanaged_plan, \
-    invoice_plan, invoice_plans_as_needed, get_discount_for_realm
-from corporate.models import Customer, CustomerPlan, LicenseLedger, \
-    get_customer_by_realm, get_current_plan_by_customer, \
-    get_current_plan_by_realm
+from zerver.lib.timestamp import datetime_to_timestamp, timestamp_to_datetime
+from zerver.models import Realm, RealmAuditLog, UserProfile, get_realm
 
 CallableT = TypeVar('CallableT', bound=Callable[..., Any])
 

corporate/urls.py

@@ -1,8 +1,8 @@
 from typing import Any
 
-from django.views.generic import TemplateView
 from django.conf.urls import include
 from django.urls import path
+from django.views.generic import TemplateView
 
 import corporate.views
 from zerver.lib.rest import rest_dispatch

corporate/views.py

@@ -1,30 +1,45 @@
 import logging
 from decimal import Decimal
-import stripe
-from typing import Any, Dict, cast, Optional, Union
+from typing import Any, Dict, Optional, Union, cast
 
+import stripe
+from django.conf import settings
 from django.core import signing
 from django.http import HttpRequest, HttpResponse, HttpResponseRedirect
-from django.utils.timezone import now as timezone_now
-from django.utils.translation import ugettext as _
 from django.shortcuts import render
 from django.urls import reverse
-from django.conf import settings
+from django.utils.timezone import now as timezone_now
+from django.utils.translation import ugettext as _
 
-from zerver.decorator import zulip_login_required, require_billing_access
+from corporate.lib.stripe import (
+    DEFAULT_INVOICE_DAYS_UNTIL_DUE,
+    MAX_INVOICED_LICENSES,
+    MIN_INVOICED_LICENSES,
+    STRIPE_PUBLISHABLE_KEY,
+    BillingError,
+    do_change_plan_status,
+    do_replace_payment_source,
+    downgrade_now,
+    get_latest_seat_count,
+    make_end_of_cycle_updates_if_needed,
+    process_initial_upgrade,
+    renewal_amount,
+    sign_string,
+    start_of_next_billing_cycle,
+    stripe_get_customer,
+    unsign_string,
+)
+from corporate.models import (
+    CustomerPlan,
+    get_current_plan_by_customer,
+    get_current_plan_by_realm,
+    get_customer_by_realm,
+)
+from zerver.decorator import require_billing_access, zulip_login_required
 from zerver.lib.request import REQ, has_request_variables
 from zerver.lib.response import json_error, json_success
-from zerver.lib.validator import check_string, check_int
+from zerver.lib.validator import check_int, check_string
 from zerver.models import UserProfile
-from corporate.lib.stripe import STRIPE_PUBLISHABLE_KEY, \
-    stripe_get_customer, get_latest_seat_count, \
-    process_initial_upgrade, sign_string, \
-    unsign_string, BillingError, do_change_plan_status, do_replace_payment_source, \
-    MIN_INVOICED_LICENSES, MAX_INVOICED_LICENSES, DEFAULT_INVOICE_DAYS_UNTIL_DUE, \
-    start_of_next_billing_cycle, renewal_amount, \
-    make_end_of_cycle_updates_if_needed, downgrade_now
-from corporate.models import CustomerPlan, get_current_plan_by_customer, \
-    get_customer_by_realm, get_current_plan_by_realm
 
 billing_logger = logging.getLogger('corporate.stripe')
 

docs/conf.py

@@ -10,10 +10,8 @@
 #
 # All configuration values have a default; values that are commented out
 # serve to show the default.
-
 import os
 import sys
-
 from typing import Any, Dict, List, Optional
 
 # If extensions (or modules to document with autodoc) are in another directory,
@@ -310,6 +308,7 @@ source_suffix = {
 # See https://github.com/zulip/zulip/issues/13263 for details.
 from recommonmark.parser import CommonMarkParser
 
+
 class CustomCommonMarkParser(CommonMarkParser):
     def visit_document(self, node):
         pass

frontend_tests/run-casper

@@ -1,10 +1,10 @@
 #!/usr/bin/env python3
 import argparse
+import glob
+import os
+import shlex
 import subprocess
 import sys
-import os
-import glob
-import shlex
 
 #
 # In order to use remote casperjs debugging, pass the --remote-debug flag
@@ -64,13 +64,14 @@ sys.path.insert(0, ZULIP_PATH)
 
 # check for the venv
 from tools.lib import sanity_check
+
 sanity_check.check_venv(__file__)
 
+from typing import Iterable, List
+
 from tools.lib.test_script import assert_provisioning_status_ok, find_js_test_files
 from tools.lib.test_server import test_server_running
 
-from typing import Iterable, List
-
 assert_provisioning_status_ok(options.force)
 
 os.chdir(ZULIP_PATH)

manage.py

@@ -1,7 +1,8 @@
 #!/usr/bin/env python3
+import configparser
 import os
 import sys
-import configparser
+
 if sys.version_info <= (3, 0):
     print("Error: Zulip is a Python 3 project, and cannot be run with Python 2.")
     print("Use e.g. `/path/to/manage.py` not `python /path/to/manage.py`.")
@@ -37,6 +38,7 @@ if __name__ == "__main__":
     from django.conf import settings
     from django.core.management import execute_from_command_line
     from django.core.management.base import CommandError
+
     from scripts.lib.zulip_tools import log_management_command
 
     log_management_command(" ".join(sys.argv), settings.MANAGEMENT_LOG_PATH)

puppet/zulip/files/nagios_plugins/zulip_app_frontend/check_cron_file

@@ -6,6 +6,7 @@ import sys
 import time
 from typing import Tuple
 
+
 def nagios_from_file(results_file: str, max_time_diff: int=60 * 2) -> 'Tuple[int, str]':
     """Returns a nagios-appropriate string and return code obtained by
     parsing the desired file on disk. The file on disk should be of format

puppet/zulip/files/nagios_plugins/zulip_app_frontend/check_send_receive_time

@@ -8,12 +8,12 @@ It supports both munin and nagios outputs
 It must be run on a machine that is using the live database for the
 Django ORM.
 """
-import sys
 import argparse
+import os
 import random
+import sys
 import time
 import traceback
-import os
 
 sys.path.append('.')
 sys.path.append('/home/zulip/deployments/current')
@@ -21,10 +21,10 @@ from scripts.lib.setup_path import setup_path
 
 setup_path()
 
-import django
-
 from typing import Any, Dict, List, Optional
 
+import django
+
 usage = """Usage: send-receive.py [options] [config]
 
        'config' is optional, if present will return config info.
@@ -75,9 +75,10 @@ os.environ['DJANGO_SETTINGS_MODULE'] = "zproject.settings"
 
 django.setup()
 
-from zerver.models import get_system_bot
 from django.conf import settings
 
+from zerver.models import get_system_bot
+
 states = {
     "OK": 0,
     "WARNING": 1,

puppet/zulip/files/nagios_plugins/zulip_nagios_server/check_postgres_replication_lag

@@ -4,10 +4,9 @@
 Nagios plugin to check the difference between the primary and
 secondary Postgres servers' xlog location.
 """
-
 import configparser
-import subprocess
 import re
+import subprocess
 from typing import NoReturn
 
 states = {

puppet/zulip/files/nagios_plugins/zulip_postgres_appdb/check_fts_update_log

@@ -4,6 +4,7 @@
 Nagios plugin to check the length of the FTS update log.
 """
 import sys
+
 sys.path.append('/home/zulip/deployments/current')
 try:
     from scripts.lib.setup_path import setup_path

puppet/zulip/files/postgresql/pg_backup_and_purge

@@ -1,16 +1,16 @@
 #!/usr/bin/env python3
-
-import os
-import sys
 import glob
+import logging
+import os
 import shlex
 import subprocess
-import logging
-import dateutil.parser
+import sys
 import time
 from datetime import datetime, timedelta, timezone
 from typing import Dict, List
 
+import dateutil.parser
+
 logging.Formatter.converter = time.gmtime
 logging.basicConfig(format="%(asctime)s %(levelname)s: %(message)s")
 logger = logging.getLogger(__name__)

puppet/zulip/files/postgresql/process_fts_updates

@@ -23,14 +23,15 @@ except ImportError:
     pass
 
 import argparse
+import configparser
+import logging
+import os
+import select
+import sys
+import time
+
 import psycopg2
 import psycopg2.extensions
-import select
-import time
-import logging
-import configparser
-import sys
-import os
 
 BATCH_SIZE = 1000
 

puppet/zulip_ops/files/nagios_plugins/zulip_zephyr_mirror/check_personal_zephyr_mirrors

@@ -8,9 +8,9 @@ This script works by just monitoring the files under
 mirrors when they receive the messages sent every minute by
 /etc/cron.d/test_zephyr_personal_mirrors
 """
-from typing import Dict
 import os
 import time
+from typing import Dict
 
 RESULTS_DIR: str = "/home/zulip/mirror_status"
 

puppet/zulip_ops/files/nagios_plugins/zulip_zephyr_mirror/check_user_zephyr_mirror_liveness

@@ -24,9 +24,9 @@ sys.path.append('/home/zulip/deployments/current/zerver')
 
 django.setup()
 
-from zerver.models import UserActivity
+from typing import Any, Dict, Optional, Set
 
-from typing import Any, Dict, Set, Optional
+from zerver.models import UserActivity
 
 states: Dict[str, int] = {
     "OK": 0,

puppet/zulip_ops/files/nagios_plugins/zulip_zephyr_mirror/check_zephyr_mirror

@@ -9,9 +9,9 @@ run out of cron.
 
 See puppet/zulip_ops/files/cron.d/zephyr-mirror for the crontab details.
 """
-from typing import Dict
 import os
 import time
+from typing import Dict
 
 RESULTS_FILE = "/var/lib/nagios_state/check-mirroring-results"
 

puppet/zulip_ops/files/zulip-ec2-configure-interfaces

@@ -40,16 +40,15 @@ Note that it currently does not handle the deconfiguration of
 interfaces.
 
 '''
-
-import sys
 import logging
 import logging.handlers
 import subprocess
+import sys
+from typing import Optional
 
 import boto.utils
 import netifaces
 
-from typing import Optional
 
 def address_of(device_id: int) -> Optional[str]:
     try:

scripts/lib/check_rabbitmq_queue.py

@@ -1,9 +1,8 @@
+import json
 import os
 import re
-import time
 import subprocess
-import json
-
+import time
 from collections import defaultdict
 from typing import Any, DefaultDict, Dict, List
 

scripts/lib/clean-unused-caches

@@ -4,8 +4,9 @@ import sys
 
 ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 sys.path.append(ZULIP_PATH)
+from scripts.lib import clean_emoji_cache, clean_node_cache, clean_venv_cache
 from scripts.lib.zulip_tools import parse_cache_script_args
-from scripts.lib import clean_venv_cache, clean_node_cache, clean_emoji_cache
+
 
 def main() -> None:
     args = parse_cache_script_args("This script cleans unused zulip caches.")

scripts/lib/clean_emoji_cache.py

@@ -2,14 +2,16 @@
 import argparse
 import os
 import sys
-
 from typing import Set
 
 ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 sys.path.append(ZULIP_PATH)
-from scripts.lib.zulip_tools import \
-    get_environment, get_recent_deployments, \
-    parse_cache_script_args, purge_unused_caches
+from scripts.lib.zulip_tools import (
+    get_environment,
+    get_recent_deployments,
+    parse_cache_script_args,
+    purge_unused_caches,
+)
 
 ENV = get_environment()
 EMOJI_CACHE_PATH = "/srv/zulip-emoji-cache"

scripts/lib/clean_node_cache.py

@@ -2,14 +2,16 @@
 import argparse
 import os
 import sys
-
 from typing import Set
 
 ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 sys.path.append(ZULIP_PATH)
-from scripts.lib.zulip_tools import \
-    get_environment, get_recent_deployments, parse_cache_script_args, \
-    purge_unused_caches
+from scripts.lib.zulip_tools import (
+    get_environment,
+    get_recent_deployments,
+    parse_cache_script_args,
+    purge_unused_caches,
+)
 
 ENV = get_environment()
 NODE_MODULES_CACHE_PATH = "/srv/zulip-npm-cache"

scripts/lib/clean_venv_cache.py

@@ -3,15 +3,17 @@ import argparse
 import glob
 import os
 import sys
-
 from typing import Set
 
 ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 sys.path.append(ZULIP_PATH)
 from scripts.lib.hash_reqs import expand_reqs, hash_deps
-from scripts.lib.zulip_tools import \
-    get_environment, get_recent_deployments, parse_cache_script_args, \
-    purge_unused_caches
+from scripts.lib.zulip_tools import (
+    get_environment,
+    get_recent_deployments,
+    parse_cache_script_args,
+    purge_unused_caches,
+)
 
 ENV = get_environment()
 VENV_CACHE_DIR = '/srv/zulip-venv-cache'

scripts/lib/create-production-venv

@@ -1,17 +1,14 @@
 #!/usr/bin/env python3
-
-import os
 import argparse
+import os
 import sys
 
 ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 if ZULIP_PATH not in sys.path:
     sys.path.append(ZULIP_PATH)
 
-from scripts.lib.zulip_tools import os_families, overwrite_symlink, run, parse_os_release
-from scripts.lib.setup_venv import (
-    setup_virtualenv, get_venv_dependencies,
-)
+from scripts.lib.setup_venv import get_venv_dependencies, setup_virtualenv
+from scripts.lib.zulip_tools import os_families, overwrite_symlink, parse_os_release, run
 
 parser = argparse.ArgumentParser(description="Create a production virtualenv with caching")
 parser.add_argument("deploy_path")

scripts/lib/create-thumbor-venv

@@ -1,17 +1,18 @@
 #!/usr/bin/env python3
-
-import os
 import argparse
+import os
 import sys
 
 ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 if ZULIP_PATH not in sys.path:
     sys.path.append(ZULIP_PATH)
 
-from scripts.lib.zulip_tools import os_families, run, parse_os_release
 from scripts.lib.setup_venv import (
-    setup_virtualenv, THUMBOR_VENV_DEPENDENCIES, YUM_THUMBOR_VENV_DEPENDENCIES,
+    THUMBOR_VENV_DEPENDENCIES,
+    YUM_THUMBOR_VENV_DEPENDENCIES,
+    setup_virtualenv,
 )
+from scripts.lib.zulip_tools import os_families, parse_os_release, run
 
 parser = argparse.ArgumentParser(description="Create a thumbor virtualenv with caching")
 parser.add_argument("deploy_path")

scripts/lib/email-mirror-postfix

@@ -40,21 +40,16 @@ Also you can use optional keys to configure the script and change default values
 -t                  Disable sending request to the Zulip server. Default value: False.
 
 """
-
+import argparse
+import json
 import os
+import posix
 import ssl
 import sys
-
-import argparse
-
-import posix
-import json
-
-from urllib.parse import urljoin, urlencode
-from urllib.request import Request, urlopen
-from urllib.error import HTTPError
 from configparser import RawConfigParser
-
+from urllib.error import HTTPError
+from urllib.parse import urlencode, urljoin
+from urllib.request import Request, urlopen
 
 parser = argparse.ArgumentParser()
 

scripts/lib/hash_reqs.py

@@ -1,10 +1,11 @@
 #!/usr/bin/env python3
-import os
-import sys
 import argparse
 import hashlib
+import os
+import sys
 from typing import Iterable, List, MutableSet
 
+
 def expand_reqs_helper(fpath: str, visited: MutableSet[str]) -> List[str]:
     if fpath in visited:
         return []

scripts/lib/node_cache.py

@@ -1,10 +1,10 @@
-import os
 import hashlib
 import json
+import os
 import shutil
+from typing import List, Optional
 
-from typing import Optional, List
-from scripts.lib.zulip_tools import subprocess_text_output, run
+from scripts.lib.zulip_tools import run, subprocess_text_output
 
 ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 ZULIP_SRV_PATH = "/srv"

scripts/lib/pythonrc.py

@@ -1,8 +1,9 @@
 try:
     from django.conf import settings  # noqa: F401
-    from zerver.models import *  # noqa: F401, F403
-    from zerver.lib.actions import *  # noqa: F401, F403
+
     from analytics.models import *  # noqa: F401, F403
+    from zerver.lib.actions import *  # noqa: F401, F403
+    from zerver.models import *  # noqa: F401, F403
 except Exception:
     import traceback
     print("\nException importing Zulip core modules on startup!")

scripts/lib/queue_workers.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-
 import argparse
 import os
 import sys
@@ -13,6 +12,7 @@ setup_path()
 os.environ['DJANGO_SETTINGS_MODULE'] = 'zproject.settings'
 
 import django
+
 django.setup()
 from zerver.worker.queue_processors import get_active_worker_queues
 

scripts/lib/setup_path.py

@@ -1,10 +1,10 @@
 """
 Use libraries from a virtualenv (by modifying sys.path) in production.
 """
-
 import os
 import sys
 
+
 def setup_path() -> None:
     if os.path.basename(sys.prefix) != "zulip-py3-venv":
         BASE_DIR = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

scripts/lib/setup_venv.py

@@ -2,10 +2,10 @@ import logging
 import os
 import shutil
 import subprocess
-from scripts.lib.zulip_tools import run, run_as_root, ENDC, WARNING, os_families
-from scripts.lib.hash_reqs import expand_reqs
+from typing import List, Optional, Set, Tuple
 
-from typing import List, Optional, Tuple, Set
+from scripts.lib.hash_reqs import expand_reqs
+from scripts.lib.zulip_tools import ENDC, WARNING, os_families, run, run_as_root
 
 ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 VENV_CACHE_PATH = "/srv/zulip-venv-cache"

scripts/lib/sharding.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-
 import json
 import os
 import subprocess
@@ -14,6 +13,7 @@ setup_path()
 
 from scripts.lib.zulip_tools import get_config_file
 
+
 def write_realm_nginx_config_line(f: Any, host: str, port: str) -> None:
     f.write("""if ($host = '{}') {{
     set $tornado_server http://tornado{};

scripts/lib/unpack-zulip

@@ -1,17 +1,24 @@
 #!/usr/bin/env python3
+import glob
 import os
 import shutil
-import sys
 import subprocess
+import sys
 import tempfile
-import glob
 
 os.environ["PYTHONUNBUFFERED"] = "y"
 
 sys.path.append(os.path.join(os.path.dirname(__file__), '..', ".."))
-from scripts.lib.zulip_tools import DEPLOYMENTS_DIR, FAIL, ENDC, make_deploy_path, \
-    get_deployment_version, is_invalid_upgrade, overwrite_symlink
 import version
+from scripts.lib.zulip_tools import (
+    DEPLOYMENTS_DIR,
+    ENDC,
+    FAIL,
+    get_deployment_version,
+    is_invalid_upgrade,
+    make_deploy_path,
+    overwrite_symlink,
+)
 
 if len(sys.argv) != 2:
     print(FAIL + f"Usage: {sys.argv[0]} <tarball>" + ENDC)

scripts/lib/upgrade-zulip

@@ -1,19 +1,27 @@
 #!/usr/bin/env python3
+import configparser
+import logging
 import os
 import shutil
-import sys
 import subprocess
-import logging
+import sys
 import time
-import configparser
 
 TARBALL_ARCHIVE_PATH = "/home/zulip/archives"
 os.environ["PYTHONUNBUFFERED"] = "y"
 
 sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..'))
-from scripts.lib.zulip_tools import DEPLOYMENTS_DIR, FAIL, ENDC, \
-    su_to_zulip, get_deployment_lock, release_deployment_lock, assert_running_as_root, \
-    get_config_file, get_deploy_options
+from scripts.lib.zulip_tools import (
+    DEPLOYMENTS_DIR,
+    ENDC,
+    FAIL,
+    assert_running_as_root,
+    get_config_file,
+    get_deploy_options,
+    get_deployment_lock,
+    release_deployment_lock,
+    su_to_zulip,
+)
 
 config_file: configparser.RawConfigParser = get_config_file()
 deploy_options = get_deploy_options(config_file)

scripts/lib/upgrade-zulip-from-git

@@ -1,18 +1,27 @@
 #!/usr/bin/env python3
-import os
-import sys
-import subprocess
-import logging
-import time
 import argparse
+import logging
+import os
+import subprocess
+import sys
+import time
 
 LOCAL_GIT_CACHE_DIR = '/srv/zulip.git'
 os.environ["PYTHONUNBUFFERED"] = "y"
 
 sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..'))
-from scripts.lib.zulip_tools import DEPLOYMENTS_DIR, make_deploy_path, \
-    get_deployment_lock, overwrite_symlink, release_deployment_lock, su_to_zulip, assert_running_as_root, \
-    get_config_file, get_deploy_options, get_config
+from scripts.lib.zulip_tools import (
+    DEPLOYMENTS_DIR,
+    assert_running_as_root,
+    get_config,
+    get_config_file,
+    get_deploy_options,
+    get_deployment_lock,
+    make_deploy_path,
+    overwrite_symlink,
+    release_deployment_lock,
+    su_to_zulip,
+)
 
 config_file = get_config_file()
 deploy_options = get_deploy_options(config_file)

scripts/lib/upgrade-zulip-stage-2

@@ -8,10 +8,10 @@ import argparse
 import configparser
 import glob
 import hashlib
-import subprocess
-import os
-import sys
 import logging
+import os
+import subprocess
+import sys
 import time
 
 os.environ["PYTHONUNBUFFERED"] = "y"
@@ -22,8 +22,12 @@ os.environ["LANG"] = "en_US.UTF-8"
 os.environ["LANGUAGE"] = "en_US.UTF-8"
 
 sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..'))
-from scripts.lib.zulip_tools import DEPLOYMENTS_DIR, su_to_zulip, \
-    assert_running_as_root, parse_os_release
+from scripts.lib.zulip_tools import (
+    DEPLOYMENTS_DIR,
+    assert_running_as_root,
+    parse_os_release,
+    su_to_zulip,
+)
 
 assert_running_as_root()
 

scripts/lib/zulip_tools.py

@@ -1,8 +1,10 @@
 #!/usr/bin/env python3
 import argparse
+import configparser
 import datetime
 import functools
 import hashlib
+import json
 import logging
 import os
 import pwd
@@ -13,11 +15,8 @@ import subprocess
 import sys
 import tempfile
 import time
-import json
 import uuid
-import configparser
-
-from typing import Sequence, Set, Any, Dict, List
+from typing import Any, Dict, List, Sequence, Set
 
 DEPLOYMENTS_DIR = "/home/zulip/deployments"
 LOCK_DIR = os.path.join(DEPLOYMENTS_DIR, "lock")

scripts/nagios/check-rabbitmq-consumers

@@ -1,12 +1,11 @@
 #!/usr/bin/env python3
-
-import sys
-import time
 import argparse
 import configparser
-from collections import defaultdict
 import os
 import subprocess
+import sys
+import time
+from collections import defaultdict
 from typing import Dict
 
 ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

scripts/nagios/cron_file_helper.py

@@ -1,7 +1,7 @@
 import time
-
 from typing import Tuple
 
+
 def nagios_from_file(results_file: str) -> Tuple[int, str]:
     """Returns a nagios-appropriate string and return code obtained by
     parsing the desired file on disk. The file on disk should be of format

scripts/purge-old-deployments

@@ -3,13 +3,12 @@ import argparse
 import os
 import subprocess
 import sys
-
 from typing import Set
 
 ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 sys.path.append(ZULIP_PATH)
-from scripts.lib.zulip_tools import DEPLOYMENTS_DIR, get_recent_deployments, \
-    may_be_perform_purging
+from scripts.lib.zulip_tools import DEPLOYMENTS_DIR, get_recent_deployments, may_be_perform_purging
+
 
 def parse_args() -> argparse.Namespace:
     parser = argparse.ArgumentParser(

scripts/restart-server

@@ -1,16 +1,16 @@
 #!/usr/bin/env python3
 import argparse
 import configparser
-import os
-import sys
-import pwd
-import subprocess
 import logging
-import time
+import os
+import pwd
 import shlex
+import subprocess
+import sys
+import time
 
 sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
-from scripts.lib.zulip_tools import ENDC, OKGREEN, WARNING, DEPLOYMENTS_DIR, overwrite_symlink
+from scripts.lib.zulip_tools import DEPLOYMENTS_DIR, ENDC, OKGREEN, WARNING, overwrite_symlink
 
 logging.Formatter.converter = time.gmtime
 logging.basicConfig(format="%(asctime)s restart-server: %(message)s",

scripts/setup/flush-memcached

@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-
 import os
 import sys
 
@@ -10,9 +9,10 @@ from scripts.lib.setup_path import setup_path
 
 setup_path()
 
-from zproject import settings
 import pylibmc
 
+from zproject import settings
+
 pylibmc.Client(
     [settings.MEMCACHED_LOCATION],
     binary=True,

scripts/setup/generate_secrets.py

@@ -1,9 +1,7 @@
 #!/usr/bin/env python3
 # This tools generates /etc/zulip/zulip-secrets.conf
-
-import sys
 import os
-
+import sys
 from typing import Dict, List
 
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
@@ -15,8 +13,8 @@ setup_path()
 os.environ['DJANGO_SETTINGS_MODULE'] = 'zproject.settings'
 
 import argparse
-import uuid
 import configparser
+import uuid
 
 os.chdir(os.path.join(os.path.dirname(__file__), '..', '..'))
 
@@ -140,6 +138,7 @@ def generate_secrets(development: bool = False) -> None:
                 # file directly.
 
                 import redis
+
                 from zerver.lib.redis_utils import get_redis_client
 
                 redis_password = random_token()

scripts/setup/inline_email_css.py

@@ -1,11 +1,11 @@
 #!/usr/bin/env python3
 import os
-
-from premailer import Premailer
-from cssutils import profile
-from cssutils.profiles import Profiles, properties, macros
 from typing import Set
 
+from cssutils import profile
+from cssutils.profiles import Profiles, macros, properties
+from premailer import Premailer
+
 ZULIP_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)), '../../')
 EMAIL_TEMPLATES_PATH = os.path.join(ZULIP_PATH, 'templates', 'zerver', 'emails')
 COMPILED_EMAIL_TEMPLATES_PATH = os.path.join(EMAIL_TEMPLATES_PATH, 'compiled')

scripts/setup/restore-backup

@@ -1,17 +1,15 @@
 #!/usr/bin/env python3
-
 import argparse
 import os
 import re
 import subprocess
 import sys
 import tempfile
-
 from typing import IO
 
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 sys.path.append(BASE_DIR)
-from scripts.lib.zulip_tools import su_to_zulip, run
+from scripts.lib.zulip_tools import run, su_to_zulip
 
 POSTGRES_USER = "postgres"
 

scripts/zulip-puppet-apply

@@ -1,11 +1,11 @@
 #!/usr/bin/env python3
-
-import os
-import sys
-import subprocess
 import configparser
+import os
 import re
-from lib.zulip_tools import parse_os_release, assert_running_as_root
+import subprocess
+import sys
+
+from lib.zulip_tools import assert_running_as_root, parse_os_release
 
 assert_running_as_root()
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

static/assets/favicon/generate

@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
-import xml.etree.ElementTree as ET
 import subprocess
+from xml.etree import ElementTree as ET
 
 # Generates the favicon images containing unread message counts.
 

tools/check-capitalization

@@ -2,6 +2,7 @@
 
 # check for the venv
 from lib import sanity_check
+
 sanity_check.check_venv(__file__)
 
 import argparse
@@ -12,8 +13,7 @@ import subprocess
 import sys
 
 sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
-from scripts.lib.zulip_tools import WARNING, FAIL, ENDC
-
+from scripts.lib.zulip_tools import ENDC, FAIL, WARNING
 from tools.lib.capitalization import check_capitalization
 
 DJANGO_PO_REGEX = re.compile('msgid "(.*?)"')

tools/check-frontend-i18n

@@ -1,18 +1,20 @@
 #!/usr/bin/env python3
-
 from typing import List
+
 # check for the venv
 from lib import sanity_check
+
 sanity_check.check_venv(__file__)
 
 import argparse
 import json
 import os
-import sys
 import subprocess
+import sys
 
 sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
-from scripts.lib.zulip_tools import WARNING, FAIL, ENDC
+from scripts.lib.zulip_tools import ENDC, FAIL, WARNING
+
 
 def find_handlebars(translatable_strings: List[str]) -> List[str]:
     errored = []

tools/check-issue-labels

@@ -1,13 +1,13 @@
 #!/usr/bin/env python3
+import argparse
+import os
+import re
+import sys
+from typing import Any, Dict, Optional
 
 import requests
-import re
-import argparse
-import sys
-import os
 
 import ConfigParser
-from typing import Any, Dict, Optional
 
 # Scans zulip repositary for issues that don't have any `area` labels.
 # GitHub API token is required as GitHub limits unauthenticated

tools/check-provision

@@ -1,16 +1,14 @@
 #!/usr/bin/env python3
-
-import os
 import argparse
+import os
 import sys
 
 tools_dir = os.path.dirname(os.path.abspath(__file__))
 root_dir = os.path.dirname(tools_dir)
 sys.path.insert(0, root_dir)
 
-from tools.lib.test_script import (
-    assert_provisioning_status_ok,
-)
+from tools.lib.test_script import assert_provisioning_status_ok
+
 
 def run() -> None:
     parser = argparse.ArgumentParser()

tools/check-templates

@@ -1,18 +1,20 @@
 #!/usr/bin/env python3
-from lib.template_parser import validate
-from lib.html_branches import build_id_dict
-from lib.pretty_print import validate_indent_html
 import argparse
-import sys
 import logging
+import sys
 
 # check for the venv
 from lib import sanity_check
+from lib.html_branches import build_id_dict
+from lib.pretty_print import validate_indent_html
+from lib.template_parser import validate
+
 sanity_check.check_venv(__file__)
 
-from zulint import lister
 from typing import Dict, Iterable, List
 
+from zulint import lister
+
 EXCLUDED_FILES = [
     ## Test data Files for testing modules in tests
     "tools/tests/test_template_data",

tools/check-thirdparty

@@ -7,12 +7,12 @@ Disclaimer: This script is not a lawyer.  It cannot validate that the
 claimed licenses are correct.  It can only check for basic syntactic
 issues.
 """
-
 import difflib
 import io
 import os
 import subprocess
 import sys
+
 from debian import copyright
 
 COPYRIGHT_FILENAME = "docs/THIRDPARTY"

tools/create-test-api-docs

@@ -2,14 +2,15 @@
 
 # check for the venv
 from lib import sanity_check
-sanity_check.check_venv(__file__)
 
-from collections import defaultdict
-from typing import Any, Dict, List, Set
+sanity_check.check_venv(__file__)
 
 import html
 import os
 import pprint
+from collections import defaultdict
+from typing import Any, Dict, List, Set
+
 import ujson
 
 Call = Dict[str, Any]

tools/diagnose

@@ -1,17 +1,16 @@
 #!/usr/bin/env python3
-
 import os
 import platform
 import shlex
-import sys
 import subprocess
-
+import sys
 from typing import Callable, List
 
 TOOLS_DIR = os.path.dirname(__file__)
 ROOT_DIR = os.path.dirname(TOOLS_DIR)
 sys.path.insert(0, ROOT_DIR)
 from scripts.lib.zulip_tools import get_dev_uuid_var_path
+
 UUID_VAR_PATH = get_dev_uuid_var_path()
 
 def run(check_func: Callable[[], bool]) -> None:
@@ -88,7 +87,7 @@ def test_models() -> bool:
     os.environ['DJANGO_SETTINGS_MODULE'] = settings_module
     import django
     django.setup()
-    from zerver.models import UserProfile, Realm
+    from zerver.models import Realm, UserProfile
     print('Num realms: ', Realm.objects.count())
     print('Num users: ', UserProfile.objects.count())
     return True

tools/documentation_crawler/documentation_crawler/commands/crawl_with_status.py

@@ -1,8 +1,9 @@
 import optparse
-from scrapy.crawler import Crawler
-from scrapy.commands import crawl
 from typing import List, Union
 
+from scrapy.commands import crawl
+from scrapy.crawler import Crawler
+
 
 class Command(crawl.Command):
     def run(self, args: List[str], opts: optparse.Values) -> None:

tools/documentation_crawler/documentation_crawler/spiders/check_documentation.py

@@ -1,6 +1,5 @@
 import os
 import pathlib
-
 from typing import List
 
 from .common.spiders import BaseDocumentationSpider

tools/documentation_crawler/documentation_crawler/spiders/check_help_documentation.py

@@ -1,12 +1,10 @@
 import os
-
 from posixpath import basename
+from typing import Any, List, Set
 from urllib.parse import urlparse
 
 from .common.spiders import BaseDocumentationSpider
 
-from typing import Any, List, Set
-
 
 def get_images_dir(images_path: str) -> str:
     # Get index html file as start url and convert it to file uri

tools/documentation_crawler/documentation_crawler/spiders/common/spiders.py

@@ -1,7 +1,8 @@
 import json
 import re
-import scrapy
+from typing import Callable, Iterable, List, Optional, Union
 
+import scrapy
 from scrapy.http import Request, Response
 from scrapy.linkextractors import IGNORED_EXTENSIONS
 from scrapy.linkextractors.lxmlhtml import LxmlLinkExtractor
@@ -9,8 +10,6 @@ from scrapy.spidermiddlewares.httperror import HttpError
 from scrapy.utils.url import url_has_any_extension
 from twisted.python.failure import Failure
 
-from typing import Callable, Iterable, List, Optional, Union
-
 EXCLUDED_URLS = [
     # Google calendar returns 404s on HEAD requests unconditionally
     'https://calendar.google.com/calendar/embed?src=ktiduof4eoh47lmgcl2qunnc0o@group.calendar.google.com',

tools/droplets/add_mentor.py

@@ -9,13 +9,12 @@
 # machine:
 #
 # $ python3 add_mentor.py --remove <mentor's username>
-
 import os
+import re
+import socket
 import sys
 from argparse import ArgumentParser
 from typing import List
-import socket
-import re
 
 import requests
 

tools/droplets/create.py

@@ -14,19 +14,18 @@
 # Copy conf.ini-template to conf.ini and populate with your api token.
 #
 # usage: python3 create.py <username>
-
-import sys
+import argparse
 import configparser
+import json
+import os
+import sys
+import time
 import urllib.error
 import urllib.request
-import json
-import digitalocean
-import time
-import argparse
-import os
-
 from typing import Any, Dict, List
 
+import digitalocean
+
 # initiation argument parser
 parser = argparse.ArgumentParser(description='Create a Zulip devopment VM Digital Ocean droplet.')
 parser.add_argument("username", help="Github username for whom you want to create a Zulip dev droplet")

tools/fetch-contributor-data

@@ -3,31 +3,32 @@
 Fetch contributors data from Github using their API, convert it to structured
 JSON data for the /team page contributors section.
 """
-
 import os
 import sys
 
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..'))
 from scripts.lib.setup_path import setup_path
+
 setup_path()
 
-from typing import Any, Dict, List, Optional, Union
-from typing_extensions import TypedDict
-
 import argparse
-from time import sleep
+import logging
 from datetime import date
 from random import randrange
-import logging
+from time import sleep
+from typing import Any, Dict, List, Optional, Union
+
+from typing_extensions import TypedDict
 
 os.environ['DJANGO_SETTINGS_MODULE'] = 'zproject.settings'
 import django
+
 django.setup()
 
-from django.conf import settings
+import json
 
 import requests
-import json
+from django.conf import settings
 
 duplicate_commits_file = os.path.join(os.path.dirname(__file__), 'duplicate_commits.json')
 

tools/generate-integration-docs-screenshot

@@ -5,7 +5,6 @@
 from lib import sanity_check
 
 sanity_check.check_venv(__file__)
-
 import os
 import sys
 
@@ -26,23 +25,33 @@ import argparse
 import base64
 import subprocess
 from typing import Any, Dict, Optional
-from urllib.parse import urlencode, parse_qsl
+from urllib.parse import parse_qsl, urlencode
 
 import requests
 import ujson
 
 from scripts.lib.zulip_tools import BOLDRED, ENDC
 from tools.lib.test_script import prepare_puppeteer_run
-from zerver.models import UserProfile, Message, get_user_by_delivery_email, get_realm
 from zerver.lib.actions import (
-    do_create_user, notify_created_bot, bulk_add_subscriptions, do_change_avatar_fields)
+    bulk_add_subscriptions,
+    do_change_avatar_fields,
+    do_create_user,
+    notify_created_bot,
+)
+from zerver.lib.integrations import (
+    DOC_SCREENSHOT_CONFIG,
+    INTEGRATIONS,
+    ScreenshotConfig,
+    WebhookIntegration,
+    get_fixture_and_image_paths,
+    split_fixture_path,
+)
+from zerver.lib.storage import static_path
 from zerver.lib.streams import create_stream_if_needed
 from zerver.lib.upload import upload_avatar_image
-from zerver.lib.integrations import (
-    WebhookIntegration, INTEGRATIONS, split_fixture_path, ScreenshotConfig, get_fixture_and_image_paths,
-    DOC_SCREENSHOT_CONFIG)
 from zerver.lib.webhooks.common import get_fixture_http_headers
-from zerver.lib.storage import static_path
+from zerver.models import Message, UserProfile, get_realm, get_user_by_delivery_email
+
 
 def create_integration_bot(integration: WebhookIntegration, bot_name: Optional[str]=None) -> UserProfile:
     realm = get_realm('zulip')

tools/i18n/process-mobile-i18n

@@ -5,6 +5,7 @@ import re
 from subprocess import check_output
 from typing import Dict, List
 
+
 def get_json_filename(locale: str) -> str:
     return f"locale/{locale}/mobile.json"
 

tools/i18n/tagmessages

@@ -1,8 +1,7 @@
 #!/usr/bin/env python3
-
 import configparser
-from hashlib import md5
 import os
+from hashlib import md5
 
 import polib
 

tools/lib/capitalization.py

@@ -1,5 +1,5 @@
-from typing import List, Tuple, Match
 import re
+from typing import List, Match, Tuple
 
 from bs4 import BeautifulSoup
 

tools/lib/gitlint-rules.py

@@ -1,9 +1,9 @@
-from typing import Text, List
+import re
+from typing import List, Text
 
 from gitlint.git import GitCommit
-from gitlint.rules import LineRule, RuleViolation, CommitMessageTitle
 from gitlint.options import StrOption
-import re
+from gitlint.rules import CommitMessageTitle, LineRule, RuleViolation
 
 # Word list from https://github.com/m1foley/fit-commit
 # Copyright (c) 2015 Mike Foley

tools/lib/html_branches.py

@@ -1,13 +1,8 @@
-from typing import Dict, List, Optional, Set
-
 import re
 from collections import defaultdict
+from typing import Dict, List, Optional, Set
 
-from .template_parser import (
-    tokenize,
-    FormattedException,
-    Token,
-)
+from .template_parser import FormattedException, Token, tokenize
 
 
 class HtmlBranchesException(Exception):

tools/lib/pretty_print.py

@@ -1,13 +1,10 @@
+import subprocess
 from typing import Any, Dict, List
 
-from .template_parser import (
-    tokenize,
-    is_django_block_tag,
-)
+from zulint.printer import ENDC, GREEN
 
-from zulint.printer import GREEN, ENDC
+from .template_parser import is_django_block_tag, tokenize
 
-import subprocess
 
 def pretty_print_html(html: str, num_spaces: int = 4) -> str:
     # We use 1-based indexing for both rows and columns.

tools/lib/provision.py

@@ -1,28 +1,37 @@
 #!/usr/bin/env python3
-import os
-import sys
-import logging
 import argparse
+import hashlib
+import logging
+import os
 import platform
 import subprocess
-import hashlib
+import sys
 
 os.environ["PYTHONUNBUFFERED"] = "y"
 
 ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 sys.path.append(ZULIP_PATH)
-from scripts.lib.zulip_tools import run_as_root, ENDC, WARNING, \
-    get_dev_uuid_var_path, FAIL, os_families, parse_os_release, \
-    overwrite_symlink
+from typing import TYPE_CHECKING, List
+
+from scripts.lib.node_cache import NODE_MODULES_CACHE_PATH, setup_node_modules
 from scripts.lib.setup_venv import (
-    get_venv_dependencies, THUMBOR_VENV_DEPENDENCIES,
+    THUMBOR_VENV_DEPENDENCIES,
     YUM_THUMBOR_VENV_DEPENDENCIES,
+    get_venv_dependencies,
+)
+from scripts.lib.zulip_tools import (
+    ENDC,
+    FAIL,
+    WARNING,
+    get_dev_uuid_var_path,
+    os_families,
+    overwrite_symlink,
+    parse_os_release,
+    run_as_root,
 )
-from scripts.lib.node_cache import setup_node_modules, NODE_MODULES_CACHE_PATH
 from tools.setup import setup_venvs
 
-from typing import List, TYPE_CHECKING
 if TYPE_CHECKING:
     from typing import NoReturn
 

tools/lib/provision_inner.py

@@ -1,22 +1,26 @@
 #!/usr/bin/env python3
-import os
-import sys
 import argparse
 import glob
+import os
 import shutil
-
+import sys
 from typing import List
 
 ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 sys.path.append(ZULIP_PATH)
-from scripts.lib.zulip_tools import run, OKBLUE, ENDC, \
-    get_dev_uuid_var_path, is_digest_obsolete, write_new_digest
-
-from version import PROVISION_VERSION
 from pygments import __version__ as pygments_version
 
+from scripts.lib.zulip_tools import (
+    ENDC,
+    OKBLUE,
+    get_dev_uuid_var_path,
+    is_digest_obsolete,
+    run,
+    write_new_digest,
+)
 from tools.setup.generate_zulip_bots_static_files import generate_zulip_bots_static_files
+from version import PROVISION_VERSION
 
 VENV_PATH = "/srv/zulip-py3-venv"
 UUID_VAR_PATH = get_dev_uuid_var_path()
@@ -177,7 +181,7 @@ def clean_unused_caches() -> None:
         verbose=False,
         no_headings=True,
     )
-    from scripts.lib import clean_venv_cache, clean_node_cache, clean_emoji_cache
+    from scripts.lib import clean_emoji_cache, clean_node_cache, clean_venv_cache
     clean_venv_cache.main(args)
     clean_node_cache.main(args)
     clean_emoji_cache.main(args)
@@ -227,12 +231,13 @@ def main(options: argparse.Namespace) -> int:
         import django
         django.setup()
 
+        from django.conf import settings
+
         from zerver.lib.test_fixtures import (
             DEV_DATABASE,
             TEST_DATABASE,
             destroy_leaked_test_databases,
         )
-        from django.conf import settings
 
         if options.is_force or need_to_run_configure_rabbitmq(
                 [settings.RABBITMQ_PASSWORD]):

tools/lib/sanity_check.py

@@ -2,6 +2,7 @@ import os
 import pwd
 import sys
 
+
 def check_venv(filename: str) -> None:
     try:
         import django

tools/lib/template_parser.py

@@ -1,5 +1,6 @@
 from typing import Callable, List, Optional, Text
 
+
 class FormattedException(Exception):
     pass
 

tools/lib/test_script.py

@@ -1,12 +1,12 @@
-from typing import Optional, Tuple, Iterable, List
-
+import glob
 import os
 import subprocess
 import sys
 from distutils.version import LooseVersion
-from version import PROVISION_VERSION
+from typing import Iterable, List, Optional, Tuple
+
 from scripts.lib.zulip_tools import get_dev_uuid_var_path
-import glob
+from version import PROVISION_VERSION
 
 ZULIP_PATH = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 

tools/lib/test_server.py

@@ -2,13 +2,12 @@ import os
 import subprocess
 import sys
 import time
-
 from contextlib import contextmanager
-
 from typing import Iterator, Optional
 
 # Verify the Zulip venv is available.
 from tools.lib import sanity_check
+
 sanity_check.check_venv(__file__)
 
 import django
@@ -20,8 +19,9 @@ TOOLS_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 if TOOLS_DIR not in sys.path:
     sys.path.insert(0, os.path.dirname(TOOLS_DIR))
 
-from zerver.lib.test_fixtures import update_test_databases_if_required
 from scripts.lib.zulip_tools import get_or_create_dev_uuid_var_path
+from zerver.lib.test_fixtures import update_test_databases_if_required
+
 
 def set_up_django(external_host: str) -> None:
     os.environ['EXTERNAL_HOST'] = external_host

tools/lint

@@ -1,16 +1,20 @@
 #!/usr/bin/env python3
+import argparse
 import os
 import sys
-import argparse
 
 # check for the venv
 from lib import sanity_check
+
 sanity_check.check_venv(__file__)
 
-from linter_lib.custom_check import python_rules, non_py_rules
-from zulint.command import add_default_linter_arguments, LinterConfig
 import random
 
+from zulint.command import LinterConfig, add_default_linter_arguments
+
+from linter_lib.custom_check import non_py_rules, python_rules
+
+
 def run() -> None:
     parser = argparse.ArgumentParser()
     parser.add_argument('--force', default=False,
@@ -26,13 +30,10 @@ def run() -> None:
     root_dir = os.path.dirname(tools_dir)
     sys.path.insert(0, root_dir)
 
+    from tools.lib.test_script import assert_provisioning_status_ok
     from tools.linter_lib.exclude import EXCLUDED_FILES, PUPPET_CHECK_RULES_TO_EXCLUDE
-    from tools.linter_lib.pyflakes import check_pyflakes
     from tools.linter_lib.pep8 import check_pep8
-
-    from tools.lib.test_script import (
-        assert_provisioning_status_ok,
-    )
+    from tools.linter_lib.pyflakes import check_pyflakes
 
     os.chdir(root_dir)
 

tools/linter_lib/pep8.py

@@ -1,6 +1,7 @@
+from typing import List
+
 from zulint.linters import run_pycodestyle
 
-from typing import List
 
 def check_pep8(files: List[str]) -> bool:
     ignored_rules = [

tools/linter_lib/pyflakes.py

@@ -1,5 +1,4 @@
 import argparse
-
 from typing import List
 
 from zulint.linters import run_pyflakes

tools/pretty-print-html

@@ -1,7 +1,9 @@
 #!/usr/bin/env python3
-from typing import List
-from lib.pretty_print import pretty_print_html
 import sys
+from typing import List
+
+from lib.pretty_print import pretty_print_html
+
 
 def clean_html(filenames: List[str]) -> None:
     for fn in filenames:

tools/renumber-migrations

@@ -1,13 +1,12 @@
 #!/usr/bin/env python3
-
+import fileinput
 import glob
 import os
-import sys
-import fileinput
 import re
-
+import sys
 from typing import List
 
+
 def validate_order(order: List[int], length: int) -> None:
     if len(order) != length:
         print("Please enter the sequence of all the conflicting files at once")

tools/review

@@ -1,10 +1,10 @@
 #!/usr/bin/env python3
-
 import shlex
 import subprocess
 import sys
 from typing import List
 
+
 def exit(message: str) -> None:
     print('PROBLEM!')
     print(message)