python: Elide unnecessary list wrappers.

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

analytics/lib/time_utils.py

@@ -30,4 +30,5 @@ def time_range(
     while current >= start:
         times.append(current)
         current -= step
-    return list(reversed(times))
+    times.reverse()
+    return times

analytics/tests/test_counts.py

@@ -1509,11 +1509,11 @@ class TestDeleteStats(AnalyticsTestCase):
         FillState.objects.create(property="test", end_time=self.TIME_ZERO, state=FillState.DONE)
 
         analytics = apps.get_app_config("analytics")
-        for table in list(analytics.models.values()):
+        for table in analytics.models.values():
             self.assertTrue(table._default_manager.exists())
 
         do_drop_all_analytics_tables()
-        for table in list(analytics.models.values()):
+        for table in analytics.models.values():
             self.assertFalse(table._default_manager.exists())
 
     def test_do_drop_single_stat(self) -> None:
@@ -1533,11 +1533,11 @@ class TestDeleteStats(AnalyticsTestCase):
         FillState.objects.create(property="to_save", end_time=self.TIME_ZERO, state=FillState.DONE)
 
         analytics = apps.get_app_config("analytics")
-        for table in list(analytics.models.values()):
+        for table in analytics.models.values():
             self.assertTrue(table._default_manager.exists())
 
         do_drop_single_stat("to_delete")
-        for table in list(analytics.models.values()):
+        for table in analytics.models.values():
             self.assertFalse(table._default_manager.filter(property="to_delete").exists())
             self.assertTrue(table._default_manager.filter(property="to_save").exists())
 

analytics/views/installation_activity.py

@@ -254,10 +254,7 @@ def realm_summary_table(realm_minutes: Dict[str, float]) -> str:
         row["string_id"] = realm_activity_link(row["string_id"])
 
     # Count active sites
-    def meets_goal(row: Dict[str, int]) -> bool:
-        return row["dau_count"] >= 5
-
-    num_active_sites = len(list(filter(meets_goal, rows)))
+    num_active_sites = sum(row["dau_count"] >= 5 for row in rows)
 
     # create totals
     total_dau_count = 0

analytics/views/stats.py

@@ -438,8 +438,7 @@ def get_chart_data(
 
 
 def sort_by_totals(value_arrays: Dict[str, List[int]]) -> List[str]:
-    totals = [(sum(values), label) for label, values in value_arrays.items()]
-    totals.sort(reverse=True)
+    totals = sorted(((sum(values), label) for label, values in value_arrays.items()), reverse=True)
     return [label for total, label in totals]
 
 

docs/tutorials/new-feature-tutorial.md

@@ -343,7 +343,7 @@ field and send an event. For example:
 def do_set_realm_authentication_methods(
     realm: Realm, authentication_methods: Dict[str, bool], *, acting_user: Optional[UserProfile]
 ) -> None:
-    for key, value in list(authentication_methods.items()):
+    for key, value in authentication_methods.items():
         index = getattr(realm.authentication_methods, key).number
         realm.authentication_methods.set_bit(index, int(value))
     realm.save(update_fields=['authentication_methods'])

puppet/zulip/files/postgresql/wal-g-exporter

@@ -36,7 +36,7 @@ class WalGPrometheusServer(BaseHTTPRequestHandler):
         def inner(value: float, labels: Optional[Mapping[str, str]] = None) -> None:
             label_str = ""
             if labels:
-                label_str = "{" + ",".join([f'{k}="{v}"' for k, v in labels.items()]) + "}"
+                label_str = "{" + ",".join(f'{k}="{v}"' for k, v in labels.items()) + "}"
             self.metric_values[name][label_str] = f"{self.METRIC_PREFIX}{name}{label_str} {value}"
 
         if default_value is not None:

scripts/log-search

@@ -472,7 +472,7 @@ def print_line(
         url,
     ]
 
-    print(color + " ".join([p for p in parts if p is not None]) + (ENDC if use_color else ""))
+    print(color + " ".join(p for p in parts if p is not None) + (ENDC if use_color else ""))
 
 
 if __name__ == "__main__":

tools/droplets/create.py

@@ -109,7 +109,7 @@ def assert_droplet_does_not_exist(my_token: str, droplet_name: str, recreate: bo
 
 
 def get_ssh_keys_string_from_github_ssh_key_dicts(userkey_dicts: List[Dict[str, Any]]) -> str:
-    return "\n".join([userkey_dict["key"] for userkey_dict in userkey_dicts])
+    return "\n".join(userkey_dict["key"] for userkey_dict in userkey_dicts)
 
 
 def generate_dev_droplet_user_data(

tools/setup/emoji/generate_emoji_names_table

@@ -157,7 +157,7 @@ def generate_emoji_code_to_emoji_names_maps() -> None:
 
 
 def get_sorting_info(category: str, sort_order: int) -> str:
-    return " ".join([category, str(sort_order)])
+    return f"{category} {sort_order}"
 
 
 def get_images_html(emoji_code: str) -> str:

zerver/actions/invites.py

@@ -422,12 +422,10 @@ def get_valid_invite_confirmations_generated_by_user(
     multiuse_invite_ids = MultiuseInvite.objects.filter(referred_by=user_profile).values_list(
         "id", flat=True
     )
-    confirmations += list(
-        Confirmation.objects.filter(
-            type=Confirmation.MULTIUSE_INVITE,
-            object_id__in=multiuse_invite_ids,
-        ).filter(Q(expiry_date__gte=timezone_now()) | Q(expiry_date=None))
-    )
+    confirmations += Confirmation.objects.filter(
+        type=Confirmation.MULTIUSE_INVITE,
+        object_id__in=multiuse_invite_ids,
+    ).filter(Q(expiry_date__gte=timezone_now()) | Q(expiry_date=None))
 
     return confirmations
 

zerver/actions/message_edit.py

@@ -774,7 +774,7 @@ def do_update_message(
             )
             subscriber_ids = set(subscriptions.values_list("user_profile_id", flat=True))
 
-        users_to_be_notified += list(map(subscriber_info, sorted(subscriber_ids)))
+        users_to_be_notified += map(subscriber_info, sorted(subscriber_ids))
 
     # UserTopic updates and the content of notifications depend on
     # whether we've moved the entire topic, or just part of it. We

zerver/actions/message_flags.py

@@ -224,7 +224,7 @@ def do_clear_mobile_push_notifications_for_ids(
     assert len(user_profile_ids) == 1 or len(message_ids) == 1
 
     messages_by_user = defaultdict(list)
-    notifications_to_update = list(
+    notifications_to_update = (
         UserMessage.objects.filter(
             message_id__in=message_ids,
             user_profile_id__in=user_profile_ids,

zerver/actions/realm_settings.py

@@ -169,7 +169,7 @@ def do_set_realm_authentication_methods(
 ) -> None:
     old_value = realm.authentication_methods_dict()
     with transaction.atomic():
-        for key, value in list(authentication_methods.items()):
+        for key, value in authentication_methods.items():
             # This does queries in a loop, but this isn't a performance sensitive
             # path and is only run rarely.
             if value:
@@ -409,15 +409,13 @@ def do_scrub_realm(realm: Realm, *, acting_user: Optional[UserProfile]) -> None:
     # more secure against bugs that may cause Message.realm to be incorrect for some
     # cross-realm messages to also determine the actual Recipients - to prevent
     # deletion of excessive messages.
-    all_recipient_ids_in_realm = (
-        list(Stream.objects.filter(realm=realm).values_list("recipient_id", flat=True))
-        + list(UserProfile.objects.filter(realm=realm).values_list("recipient_id", flat=True))
-        + list(
-            Subscription.objects.filter(
-                recipient__type=Recipient.HUDDLE, user_profile__realm=realm
-            ).values_list("recipient_id", flat=True)
-        )
-    )
+    all_recipient_ids_in_realm = [
+        *Stream.objects.filter(realm=realm).values_list("recipient_id", flat=True),
+        *UserProfile.objects.filter(realm=realm).values_list("recipient_id", flat=True),
+        *Subscription.objects.filter(
+            recipient__type=Recipient.HUDDLE, user_profile__realm=realm
+        ).values_list("recipient_id", flat=True),
+    ]
     cross_realm_bot_message_ids = list(
         Message.objects.filter(
             # Filtering by both message.recipient and message.realm is

zerver/data_import/rocketchat.py

@@ -284,7 +284,7 @@ def build_custom_emoji(
     # Build custom emoji
     for rc_emoji in custom_emoji_data["emoji"]:
         # Subject to change with changes in database
-        emoji_file_id = ".".join([rc_emoji["name"], rc_emoji["extension"]])
+        emoji_file_id = f'{rc_emoji["name"]}.{rc_emoji["extension"]}'
 
         emoji_file_info = emoji_file_data[emoji_file_id]
 
@@ -849,9 +849,7 @@ def separate_channel_private_and_livechat_messages(
     private_messages: List[Dict[str, Any]],
     livechat_messages: List[Dict[str, Any]],
 ) -> None:
-    private_channels_list = list(direct_id_to_direct_map.keys()) + list(
-        huddle_id_to_huddle_map.keys()
-    )
+    private_channels_list = [*direct_id_to_direct_map, *huddle_id_to_huddle_map]
     for message in messages:
         if not message.get("rid"):
             # Message does not belong to any channel (might be

zerver/data_import/slack.py

@@ -797,7 +797,7 @@ def get_messages_iterator(
     not read all the messages into memory at once, because for
     large imports that can OOM kill."""
 
-    dir_names = list(added_channels.keys()) + list(added_mpims.keys()) + list(dm_members.keys())
+    dir_names = [*added_channels, *added_mpims, *dm_members]
     all_json_names: Dict[str, List[str]] = defaultdict(list)
     for dir_name in dir_names:
         dir_path = os.path.join(slack_data_dir, dir_name)

zerver/lib/data_types.py

@@ -67,7 +67,7 @@ class DictType:
     def schema(self, var_name: str) -> str:
         # Our current schema is lossy, since our OpenAPI configs
         # aren't rigorous about "required" fields yet.
-        keys = sorted(list(self.required_keys) + list(self.optional_keys))
+        keys = sorted([*self.required_keys, *self.optional_keys])
 
         sub_schema = "\n".join(schema(name, data_type) for name, data_type in keys)
         return f"{var_name} (dict):\n{indent(sub_schema)}"

zerver/lib/digest.py

@@ -145,8 +145,7 @@ def _enqueue_emails_for_realm(realm: Realm, cutoff: datetime.datetime) -> None:
         .distinct()
     )
 
-    user_ids = list(realm_user_ids - active_user_ids)
-    user_ids.sort()
+    user_ids = sorted(realm_user_ids - active_user_ids)
 
     # We process batches of 30.  We want a big enough batch
     # to amortize work, but not so big that a single item

zerver/lib/events.py

@@ -1349,8 +1349,7 @@ def apply_event(
             for user_group in state["realm_user_groups"]:
                 if user_group["id"] == event["group_id"]:
                     members = set(user_group["members"])
-                    user_group["members"] = list(members - set(event["user_ids"]))
-                    user_group["members"].sort()
+                    user_group["members"] = sorted(members - set(event["user_ids"]))
         elif event["op"] == "add_subgroups":
             for user_group in state["realm_user_groups"]:
                 if user_group["id"] == event["group_id"]:
@@ -1360,10 +1359,9 @@ def apply_event(
             for user_group in state["realm_user_groups"]:
                 if user_group["id"] == event["group_id"]:
                     subgroups = set(user_group["direct_subgroup_ids"])
-                    user_group["direct_subgroup_ids"] = list(
+                    user_group["direct_subgroup_ids"] = sorted(
                         subgroups - set(event["direct_subgroup_ids"])
                     )
-                    user_group["direct_subgroup_ids"].sort()
         elif event["op"] == "remove":
             state["realm_user_groups"] = [
                 ug for ug in state["realm_user_groups"] if ug["id"] != event["group_id"]
@@ -1597,8 +1595,7 @@ def post_process_state(
     See the note above; the same technique applies below.
     """
     if "raw_users" in ret:
-        user_dicts = list(ret["raw_users"].values())
-        user_dicts = sorted(user_dicts, key=lambda x: x["user_id"])
+        user_dicts = sorted(ret["raw_users"].values(), key=lambda x: x["user_id"])
 
         ret["realm_users"] = [d for d in user_dicts if d["is_active"]]
         ret["realm_non_active_users"] = [d for d in user_dicts if not d["is_active"]]

zerver/lib/export.py

@@ -308,16 +308,16 @@ DATE_FIELDS: Dict[TableName, List[Field]] = {
 def sanity_check_output(data: TableData) -> None:
     # First, we verify that the export tool has a declared
     # configuration for every table declared in the `models.py` files.
-    target_models = (
-        list(apps.get_app_config("analytics").get_models(include_auto_created=True))
-        + list(apps.get_app_config("django_otp").get_models(include_auto_created=True))
-        + list(apps.get_app_config("otp_static").get_models(include_auto_created=True))
-        + list(apps.get_app_config("otp_totp").get_models(include_auto_created=True))
-        + list(apps.get_app_config("phonenumber").get_models(include_auto_created=True))
-        + list(apps.get_app_config("social_django").get_models(include_auto_created=True))
-        + list(apps.get_app_config("two_factor").get_models(include_auto_created=True))
-        + list(apps.get_app_config("zerver").get_models(include_auto_created=True))
-    )
+    target_models = [
+        *apps.get_app_config("analytics").get_models(include_auto_created=True),
+        *apps.get_app_config("django_otp").get_models(include_auto_created=True),
+        *apps.get_app_config("otp_static").get_models(include_auto_created=True),
+        *apps.get_app_config("otp_totp").get_models(include_auto_created=True),
+        *apps.get_app_config("phonenumber").get_models(include_auto_created=True),
+        *apps.get_app_config("social_django").get_models(include_auto_created=True),
+        *apps.get_app_config("two_factor").get_models(include_auto_created=True),
+        *apps.get_app_config("zerver").get_models(include_auto_created=True),
+    ]
     all_tables_db = {model._meta.db_table for model in target_models}
 
     # These assertion statements will fire when we add a new database

zerver/lib/markdown/__init__.py

@@ -333,10 +333,7 @@ def image_preview_enabled(
 def list_of_tlds() -> List[str]:
     # Skip a few overly-common false-positives from file extensions
     common_false_positives = {"java", "md", "mov", "py", "zip"}
-    tlds = list(tld_set - common_false_positives)
-
-    tlds.sort(key=len, reverse=True)
-    return tlds
+    return sorted(tld_set - common_false_positives, key=len, reverse=True)
 
 
 def walk_tree(
@@ -762,9 +759,7 @@ class InlineInterestingLinkProcessor(markdown.treeprocessors.Treeprocessor):
             if image_info is None:
                 image_info = {}
             image_info["is_image"] = True
-            parsed_url_list = list(parsed_url)
-            parsed_url_list[4] = "raw=1"  # Replaces query
-            image_info["image"] = urllib.parse.urlunparse(parsed_url_list)
+            image_info["image"] = parsed_url._replace(query="raw=1").geturl()
 
             return image_info
         return None
@@ -992,8 +987,9 @@ class InlineInterestingLinkProcessor(markdown.treeprocessors.Treeprocessor):
 
                 # Find the image size that is smaller than
                 # TWITTER_MAX_IMAGE_HEIGHT px tall or the smallest
-                size_name_tuples = list(media_item["sizes"].items())
-                size_name_tuples.sort(reverse=True, key=lambda x: x[1]["h"])
+                size_name_tuples = sorted(
+                    media_item["sizes"].items(), reverse=True, key=lambda x: x[1]["h"]
+                )
                 for size_name, size in size_name_tuples:
                     if size["h"] < self.TWITTER_MAX_IMAGE_HEIGHT:
                         break

zerver/lib/markdown/nested_code_blocks.py

@@ -46,8 +46,8 @@ class NestedCodeBlocksRendererTreeProcessor(markdown.treeprocessors.Treeprocesso
                 parent.tag == "p"
                 and grandparent.tag == "li"
                 and parent.text is None
-                and len(list(parent)) == 1
-                and len(list(parent.itertext())) == 1
+                and len(parent) == 1
+                and sum(1 for text in parent.itertext()) == 1
             ):
                 # if the parent (<p>) has no text, and no children,
                 # that means that the <code> element inside is its

zerver/lib/message.py

@@ -1401,9 +1401,11 @@ def format_unread_message_details(
     for message_id, huddle_message_details in raw_unread_data["huddle_dict"].items():
         # The client wants a list of user_ids in the conversation, excluding ourself,
         # that is sorted in numerical order.
-        user_ids = [int(s) for s in huddle_message_details["user_ids_string"].split(",")]
-        user_ids = [user_id for user_id in user_ids if user_id != my_user_id]
-        user_ids.sort()
+        user_ids = sorted(
+            user_id
+            for s in huddle_message_details["user_ids_string"].split(",")
+            if (user_id := int(s)) != my_user_id
+        )
         message_details = MessageDetailsDict(
             type="private",
             user_ids=user_ids,

zerver/lib/onboarding.py

@@ -143,7 +143,7 @@ def bot_commands(no_help_command: bool = False) -> str:
     ]
     if not no_help_command:
         commands.append("help")
-    return ", ".join(["`" + command + "`" for command in commands]) + "."
+    return ", ".join("`" + command + "`" for command in commands) + "."
 
 
 def select_welcome_bot_response(human_response_lower: str) -> str:

zerver/lib/push_notifications.py

@@ -264,11 +264,9 @@ def send_apple_push_notification(
             )
             for device in devices
         ]
-        results = list(
-            await asyncio.gather(
-                *(apns_context.apns.send_notification(request) for request in requests),
-                return_exceptions=True,
-            )
+        results = await asyncio.gather(
+            *(apns_context.apns.send_notification(request) for request in requests),
+            return_exceptions=True,
         )
         return zip(devices, results)
 
@@ -724,7 +722,7 @@ def get_mobile_push_content(rendered_content: str) -> str:
     def render_olist(ol: lxml.html.HtmlElement) -> str:
         items = []
         counter = int(ol.get("start")) if ol.get("start") else 1
-        nested_levels = len(list(ol.iterancestors("ol")))
+        nested_levels = sum(1 for ancestor in ol.iterancestors("ol"))
         indent = ("\n" + "  " * nested_levels) if nested_levels else ""
 
         for li in ol:

zerver/lib/request.py

@@ -470,9 +470,9 @@ def has_request_variables(
             # which could lead to inaccurate output.
             and 200 <= return_value.status_code < 300
         ):
-            ignored_parameters = set(
-                list(request.POST.keys()) + list(request.GET.keys())
-            ).difference(request_notes.processed_parameters)
+            ignored_parameters = {*request.POST, *request.GET}.difference(
+                request_notes.processed_parameters
+            )
 
             # This will be called each time a function decorated with
             # has_request_variables returns a MutableJsonResponse with a

zerver/lib/stream_subscription.py

@@ -94,7 +94,7 @@ def get_used_colors_for_user_ids(user_ids: List[int]) -> Dict[int, Set[str]]:
 
     result: Dict[int, Set[str]] = defaultdict(set)
 
-    for row in list(query):
+    for row in query:
         assert row["color"] is not None
         result[row["user_profile_id"]].add(row["color"])
 

zerver/lib/streams.py

@@ -964,8 +964,9 @@ def do_get_streams(
     stream_ids = {stream.id for stream in streams}
     recent_traffic = get_streams_traffic(stream_ids, user_profile.realm)
 
-    stream_dicts = [stream_to_dict(stream, recent_traffic) for stream in streams]
-    stream_dicts.sort(key=lambda elt: elt["name"])
+    stream_dicts = sorted(
+        (stream_to_dict(stream, recent_traffic) for stream in streams), key=lambda elt: elt["name"]
+    )
 
     if include_default:
         default_stream_ids = get_default_stream_ids_for_realm(user_profile.realm_id)

zerver/lib/string_validation.py

@@ -10,9 +10,12 @@ from zerver.models import Stream
 # https://www.unicode.org/faq/private_use.html#nonchar4
 unicode_non_chars = {
     chr(x)
-    for x in list(range(0xFDD0, 0xFDF0))  # FDD0 through FDEF, inclusive
-    + list(range(0xFFFE, 0x110000, 0x10000))  # 0xFFFE, 0x1FFFE, ... 0x10FFFE inclusive
-    + list(range(0xFFFF, 0x110000, 0x10000))  # 0xFFFF, 0x1FFFF, ... 0x10FFFF inclusive
+    for r in [
+        range(0xFDD0, 0xFDF0),  # FDD0 through FDEF, inclusive
+        range(0xFFFE, 0x110000, 0x10000),  # 0xFFFE, 0x1FFFE, ... 0x10FFFE inclusive
+        range(0xFFFF, 0x110000, 0x10000),  # 0xFFFF, 0x1FFFF, ... 0x10FFFF inclusive
+    ]
+    for x in r
 }
 
 

zerver/lib/typed_endpoint.py

@@ -543,9 +543,9 @@ def typed_endpoint(
             # which could lead to inaccurate output.
             and 200 <= return_value.status_code < 300
         ):
-            ignored_parameters = set(
-                list(request.POST.keys()) + list(request.GET.keys())
-            ).difference(request_notes.processed_parameters)
+            ignored_parameters = {*request.POST, *request.GET}.difference(
+                request_notes.processed_parameters
+            )
 
             # This will be called each time a function decorated with @typed_endpoint
             # returns a MutableJsonResponse with a success status_code. Because

zerver/lib/user_counts.py

@@ -17,7 +17,7 @@ def realm_user_count_by_role(realm: Realm) -> Dict[str, Any]:
         str(UserProfile.ROLE_MEMBER): 0,
         str(UserProfile.ROLE_GUEST): 0,
     }
-    for value_dict in list(
+    for value_dict in (
         UserProfile.objects.filter(realm=realm, is_bot=False, is_active=True)
         .values("role")
         .annotate(Count("role"))

zerver/lib/user_topics.py

@@ -229,7 +229,7 @@ def exclude_topic_mutes(
         topic_cond = topic_match_sa(topic_name)
         return and_(stream_cond, topic_cond)
 
-    condition = not_(or_(*list(map(mute_cond, rows))))
+    condition = not_(or_(*map(mute_cond, rows)))
     return [*conditions, condition]
 
 

zerver/lib/users.py

@@ -182,10 +182,8 @@ def bulk_get_cross_realm_bots() -> Dict[str, UserProfile]:
     where_clause = (
         "upper(zerver_userprofile.email::text) IN (SELECT upper(email) FROM unnest(%s) AS email)"
     )
-    users = list(
-        UserProfile.objects.filter(realm__string_id=settings.SYSTEM_BOT_REALM).extra(
-            where=[where_clause], params=(emails,)
-        )
+    users = UserProfile.objects.filter(realm__string_id=settings.SYSTEM_BOT_REALM).extra(
+        where=[where_clause], params=(emails,)
     )
 
     return {user.email.lower(): user for user in users}

zerver/lib/validator.py

@@ -316,7 +316,7 @@ def check_dict(
             delta_keys = set(val.keys()) - required_keys_set - optional_keys_set
             if len(delta_keys) != 0:
                 raise ValidationError(
-                    _("Unexpected arguments: {keys}").format(keys=", ".join(list(delta_keys)))
+                    _("Unexpected arguments: {keys}").format(keys=", ".join(delta_keys))
                 )
 
         return cast(Dict[str, ResultT], val)

zerver/management/commands/export_search.py

@@ -187,7 +187,7 @@ This is most often used for legal compliance.
                 .values_list("full_name", "delivery_email")
             )
 
-            return ", ".join([format_sender(e[0], e[1]) for e in users]), False
+            return ", ".join(format_sender(e[0], e[1]) for e in users), False
 
         def transform_message(message: Message) -> Dict[str, str]:
             row = {

zerver/migrations/0284_convert_realm_admins_to_realm_owners.py

@@ -34,7 +34,7 @@ def set_realm_admins_as_realm_owners(
             str(UserProfile.ROLE_MEMBER): 0,
             str(UserProfile.ROLE_GUEST): 0,
         }
-        for value_dict in list(
+        for value_dict in (
             UserProfile.objects.filter(realm=realm, is_bot=False, is_active=True)
             .values("role")
             .annotate(Count("role"))

zerver/migrations/0371_invalid_characters_in_topics.py

@@ -8,9 +8,12 @@ from django.db.migrations.state import StateApps
 # https://www.unicode.org/faq/private_use.html#nonchar4
 unicode_non_chars = {
     chr(x)
-    for x in list(range(0xFDD0, 0xFDF0))  # FDD0 through FDEF, inclusive
-    + list(range(0xFFFE, 0x110000, 0x10000))  # 0xFFFE, 0x1FFFE, ... 0x10FFFE inclusive
-    + list(range(0xFFFF, 0x110000, 0x10000))  # 0xFFFF, 0x1FFFF, ... 0x10FFFF inclusive
+    for r in [
+        range(0xFDD0, 0xFDF0),  # FDD0 through FDEF, inclusive
+        range(0xFFFE, 0x110000, 0x10000),  # 0xFFFE, 0x1FFFE, ... 0x10FFFE inclusive
+        range(0xFFFF, 0x110000, 0x10000),  # 0xFFFF, 0x1FFFF, ... 0x10FFFF inclusive
+    ]
+    for x in r
 }
 
 

zerver/migrations/0375_invalid_characters_in_stream_names.py

@@ -8,9 +8,12 @@ from django.db.migrations.state import StateApps
 # https://www.unicode.org/faq/private_use.html#nonchar4
 unicode_non_chars = {
     chr(x)
-    for x in list(range(0xFDD0, 0xFDF0))  # FDD0 through FDEF, inclusive
-    + list(range(0xFFFE, 0x110000, 0x10000))  # 0xFFFE, 0x1FFFE, ... 0x10FFFE inclusive
-    + list(range(0xFFFF, 0x110000, 0x10000))  # 0xFFFF, 0x1FFFF, ... 0x10FFFF inclusive
+    for r in [
+        range(0xFDD0, 0xFDF0),  # FDD0 through FDEF, inclusive
+        range(0xFFFE, 0x110000, 0x10000),  # 0xFFFE, 0x1FFFE, ... 0x10FFFE inclusive
+        range(0xFFFF, 0x110000, 0x10000),  # 0xFFFF, 0x1FFFF, ... 0x10FFFF inclusive
+    ]
+    for x in r
 }
 
 

zerver/migrations/0383_revoke_invitations_from_deactivated_users.py

@@ -36,13 +36,11 @@ def revoke_invitations(apps: StateApps, schema_editor: BaseDatabaseSchemaEditor)
         multiuse_invite_ids = MultiuseInvite.objects.filter(
             referred_by_id__in=user_ids
         ).values_list("id", flat=True)
-        confirmation_ids += list(
-            Confirmation.objects.filter(
-                type=Confirmation.MULTIUSE_INVITE,
-                expiry_date__gte=timezone_now(),
-                object_id__in=multiuse_invite_ids,
-            ).values_list("id", flat=True)
-        )
+        confirmation_ids += Confirmation.objects.filter(
+            type=Confirmation.MULTIUSE_INVITE,
+            expiry_date__gte=timezone_now(),
+            object_id__in=multiuse_invite_ids,
+        ).values_list("id", flat=True)
 
         return confirmation_ids
 

zerver/tests/test_auth_backends.py

@@ -5275,7 +5275,7 @@ class TestDevAuthBackend(ZulipTestCase):
         self.assertEqual(result.status_code, 302)
         self.assertEqual(result["Location"], "http://zulip.testserver/")
         self.assert_logged_in_user_id(user_profile.id)
-        self.assertIn("otp_device_id", list(self.client.session.keys()))
+        self.assertIn("otp_device_id", self.client.session.keys())
 
     def test_redirect_to_next_url(self) -> None:
         def do_local_login(formaction: str) -> "TestHttpResponse":
@@ -5937,7 +5937,7 @@ class TestLDAP(ZulipLDAPTestCase):
         for key, value in ldap_dir.items():
             self.assertTrue(regex.match(key))
             self.assertCountEqual(
-                list(value.keys()), [*common_attrs, "uid", "thumbnailPhoto", "userAccountControl"]
+                value.keys(), [*common_attrs, "uid", "thumbnailPhoto", "userAccountControl"]
             )
 
         ldap_dir = generate_dev_ldap_dir("b", 9)
@@ -5945,14 +5945,14 @@ class TestLDAP(ZulipLDAPTestCase):
         regex = re.compile(r"(uid\=)+[a-zA-Z0-9_.+-]+(\,ou\=users\,dc\=zulip\,dc\=com)")
         for key, value in ldap_dir.items():
             self.assertTrue(regex.match(key))
-            self.assertCountEqual(list(value.keys()), [*common_attrs, "uid", "jpegPhoto"])
+            self.assertCountEqual(value.keys(), [*common_attrs, "uid", "jpegPhoto"])
 
         ldap_dir = generate_dev_ldap_dir("c", 8)
         self.assert_length(ldap_dir, 8)
         regex = re.compile(r"(uid\=)+[a-zA-Z0-9_.+-]+(\,ou\=users\,dc\=zulip\,dc\=com)")
         for key, value in ldap_dir.items():
             self.assertTrue(regex.match(key))
-            self.assertCountEqual(list(value.keys()), [*common_attrs, "uid", "email"])
+            self.assertCountEqual(value.keys(), [*common_attrs, "uid", "email"])
 
     @override_settings(AUTHENTICATION_BACKENDS=("zproject.backends.ZulipLDAPAuthBackend",))
     def test_dev_ldap_fail_login(self) -> None:

zerver/tests/test_message_fetch.py

@@ -2498,7 +2498,7 @@ class GetOldMessagesTest(ZulipTestCase):
         params = {k: orjson.dumps(v).decode() for k, v in raw_params.items()}
         result = self.client_get("/json/messages/matches_narrow", params)
         messages = self.assert_json_success(result)["messages"]
-        self.assert_length(list(messages.keys()), 1)
+        self.assert_length(messages, 1)
         message = messages[str(good_id)]
         self.assertEqual(
             message["match_content"],
@@ -2514,7 +2514,7 @@ class GetOldMessagesTest(ZulipTestCase):
         params = {k: orjson.dumps(v).decode() for k, v in raw_params.items()}
         result = self.client_get("/json/messages/matches_narrow", params)
         messages = self.assert_json_success(result)["messages"]
-        self.assert_length(list(messages.keys()), 1)
+        self.assert_length(messages, 1)
         message = messages[str(good_id)]
         self.assertEqual(
             message["match_content"],
@@ -2973,7 +2973,7 @@ class GetOldMessagesTest(ZulipTestCase):
         params = {k: orjson.dumps(v).decode() for k, v in raw_params.items()}
         result = self.client_get("/json/messages/matches_narrow", params)
         messages = self.assert_json_success(result)["messages"]
-        self.assert_length(list(messages.keys()), 1)
+        self.assert_length(messages, 1)
         message = messages[str(good_id)]
         self.assertIn("a href=", message["match_content"])
         self.assertIn("http://foo.com", message["match_content"])

zerver/tests/test_user_groups.py

@@ -135,14 +135,14 @@ class UserGroupTestCase(ZulipTestCase):
             list(get_recursive_group_members(everyone_group)), [desdemona, iago, shiva]
         )
 
-        self.assertIn(leadership_group, list(get_recursive_membership_groups(desdemona)))
-        self.assertIn(staff_group, list(get_recursive_membership_groups(desdemona)))
-        self.assertIn(everyone_group, list(get_recursive_membership_groups(desdemona)))
+        self.assertIn(leadership_group, get_recursive_membership_groups(desdemona))
+        self.assertIn(staff_group, get_recursive_membership_groups(desdemona))
+        self.assertIn(everyone_group, get_recursive_membership_groups(desdemona))
 
-        self.assertIn(staff_group, list(get_recursive_membership_groups(iago)))
-        self.assertIn(everyone_group, list(get_recursive_membership_groups(iago)))
+        self.assertIn(staff_group, get_recursive_membership_groups(iago))
+        self.assertIn(everyone_group, get_recursive_membership_groups(iago))
 
-        self.assertIn(everyone_group, list(get_recursive_membership_groups(shiva)))
+        self.assertIn(everyone_group, get_recursive_membership_groups(shiva))
 
     def test_subgroups_of_role_based_system_groups(self) -> None:
         realm = get_realm("zulip")

zerver/views/development/dev_login.py

@@ -42,7 +42,7 @@ def get_dev_users(realm: Optional[Realm] = None, extra_users_count: int = 10) ->
     extra_users = users_query.filter(email__startswith="extrauser").order_by("email")
     # Limit the number of extra users we offer by default
     extra_users = extra_users[0:extra_users_count]
-    users = list(shakespearian_users) + list(extra_users)
+    users = [*shakespearian_users, *extra_users]
     return users
 
 

zerver/views/documentation.py

@@ -281,7 +281,7 @@ class MarkdownDirectoryView(ApiURLView):
 def add_integrations_context(context: Dict[str, Any]) -> None:
     alphabetical_sorted_categories = OrderedDict(sorted(CATEGORIES.items()))
     alphabetical_sorted_integration = OrderedDict(sorted(INTEGRATIONS.items()))
-    enabled_integrations_count = len(list(filter(lambda v: v.is_enabled(), INTEGRATIONS.values())))
+    enabled_integrations_count = sum(v.is_enabled() for v in INTEGRATIONS.values())
     # Subtract 1 so saying "Over X integrations" is correct. Then,
     # round down to the nearest multiple of 10.
     integrations_count_display = ((enabled_integrations_count - 1) // 10) * 10

zerver/views/realm.py

@@ -166,7 +166,7 @@ def update_realm(
     if authentication_methods is not None:
         if not user_profile.is_realm_owner:
             raise OrganizationOwnerRequiredError
-        if True not in list(authentication_methods.values()):
+        if True not in authentication_methods.values():
             raise JsonableError(_("At least one authentication method must be enabled."))
     if video_chat_provider is not None and video_chat_provider not in {
         p["id"] for p in Realm.VIDEO_CHAT_PROVIDERS.values()
@@ -285,7 +285,7 @@ def update_realm(
     req_vars = {}
     req_group_setting_vars = {}
 
-    for k, v in list(locals().items()):
+    for k, v in locals().items():
         if k in realm.property_types:
             req_vars[k] = v
 
@@ -293,7 +293,7 @@ def update_realm(
             if k == permissions_configuration.id_field_name:
                 req_group_setting_vars[k] = v
 
-    for k, v in list(req_vars.items()):
+    for k, v in req_vars.items():
         if v is not None and getattr(realm, k) != v:
             do_set_realm_property(realm, k, v, acting_user=user_profile)
             if isinstance(v, str):
@@ -535,10 +535,8 @@ def update_realm_user_settings_defaults(
         check_settings_values(notification_sound, email_notifications_batching_period_seconds)
 
     realm_user_default = RealmUserDefault.objects.get(realm=user_profile.realm)
-    request_settings = {
-        k: v for k, v in list(locals().items()) if (k in RealmUserDefault.property_types)
-    }
-    for k, v in list(request_settings.items()):
+    request_settings = {k: v for k, v in locals().items() if (k in RealmUserDefault.property_types)}
+    for k, v in request_settings.items():
         if v is not None and getattr(realm_user_default, k) != v:
             do_set_realm_user_default_setting(realm_user_default, k, v, acting_user=user_profile)
 

zerver/views/user_settings.py

@@ -361,8 +361,8 @@ def json_change_settings(
             check_change_full_name(user_profile, full_name, user_profile)
 
     # Loop over user_profile.property_types
-    request_settings = {k: v for k, v in list(locals().items()) if k in user_profile.property_types}
-    for k, v in list(request_settings.items()):
+    request_settings = {k: v for k, v in locals().items() if k in user_profile.property_types}
+    for k, v in request_settings.items():
         if v is not None and getattr(user_profile, k) != v:
             do_change_user_setting(user_profile, k, v, acting_user=user_profile)
 

zerver/webhooks/github/view.py

@@ -892,7 +892,7 @@ def get_zulip_event_name(
             return "issue_milestoned_or_demilestoned"
         else:
             return "issues"
-    elif header_event in list(EVENT_FUNCTION_MAPPER.keys()):
+    elif header_event in EVENT_FUNCTION_MAPPER:
         return header_event
     elif header_event in IGNORED_EVENTS:
         return None

zerver/webhooks/gitlab/view.py

@@ -526,7 +526,7 @@ def get_event(request: HttpRequest, payload: WildValue, branches: Optional[str])
         if branches.find(branch) == -1:
             return None
 
-    if event in list(EVENT_FUNCTION_MAPPER.keys()):
+    if event in EVENT_FUNCTION_MAPPER:
         return event
 
     raise UnsupportedWebhookEventTypeError(event)

zerver/webhooks/jotform/view.py

@@ -20,10 +20,10 @@ def api_jotform_webhook(
 ) -> HttpResponse:
     topic = payload["formTitle"].tame(check_string)
     submission_id = payload["submissionID"].tame(check_string)
-    fields_dict = list(payload["pretty"].tame(check_string).split(", "))
+    fields = payload["pretty"].tame(check_string).split(", ")
 
     form_response = f"A new submission (ID {submission_id}) was received:\n"
-    for field in fields_dict:
+    for field in fields:
         form_response += f"* {field}\n"
 
     message = form_response.strip()

zerver/webhooks/slack/view.py

@@ -26,7 +26,7 @@ def api_slack_webhook(
     stream: str = "slack",
     channels_map_to_topics: str = "1",
 ) -> HttpResponse:
-    if channels_map_to_topics not in list(VALID_OPTIONS.values()):
+    if channels_map_to_topics not in VALID_OPTIONS.values():
         raise JsonableError(_("Error: channels_map_to_topics parameter other than 0 or 1"))
 
     if channels_map_to_topics == VALID_OPTIONS["SHOULD_BE_MAPPED"]: