ruff: Fix RUF027 Possible f-string without an `f` prefix.

This is a preview rule, not yet enabled by default.

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

puppet/kandra/files/statuspage-pusher

@@ -22,7 +22,7 @@ def fetch_metric(metric_id: str, query: str) -> float:
     conn.close()
     data = json.loads(raw_bytes)
     if data["status"] != "success":
-        raise Exception("Failed to request {metric_id}: {raw_bytes.decode()}")
+        raise Exception(f"Failed to request {metric_id}: {raw_bytes.decode()}")
     return float(data["data"]["result"][0]["value"][1])
 
 

scripts/setup/compare-settings-to-template

@@ -65,7 +65,7 @@ print(f"Most likely version: {likely[0]}")
 diff = difflib.unified_diff(
     templ[likely[0]].splitlines(keepends=True),
     current_contents.splitlines(keepends=True),
-    fromfile="zulip-server-{version}/zproject/prod_settings_template.py",
+    fromfile=f"zulip-server-{version}/zproject/prod_settings_template.py",
     tofile=current_path,
 )
 

tools/droplets/create.py

@@ -318,7 +318,7 @@ if __name__ == "__main__":
     if args.subdomain:
         subdomain = args.subdomain.lower()
     elif args.production:
-        subdomain = "{username}-prod"
+        subdomain = f"{username}-prod"
     else:
         subdomain = username
 

zerver/tests/test_external.py

@@ -196,7 +196,7 @@ class RateLimitTests(ZulipTestCase):
         user = self.example_user("cordelia")
         RateLimitedUser(user).clear_history()
 
-        emails = ["new-email-{n}@zulip.com" for n in range(1, 8)]
+        emails = [f"new-email-{n}@zulip.com" for n in range(1, 8)]
         self.do_test_hit_ratelimits(
             lambda: self.api_patch(user, "/api/v1/settings", {"email": emails.pop()}),
         )