ruff: Fix C400 Unnecessary generator (rewrite as a list comprehension).

Signed-off-by: Anders Kaseorg <[email protected]>

Author: andersk

tools/custom_check.py

@@ -8,9 +8,8 @@
     {"pattern": r"\t", "description": "Fix tab-based whitespace"},
 ]
 
-markdown_whitespace_rules = list(
-    rule for rule in whitespace_rules if rule["pattern"] != r"[\t ]+$"
-) + [
+markdown_whitespace_rules: List[Rule] = [
+    *(rule for rule in whitespace_rules if rule["pattern"] != r"[\t ]+$"),
     # Two spaces trailing a line with other content is okay--it's a markdown line break.
     # This rule finds one space trailing a non-space, three or more trailing spaces, and
     # spaces on an empty line.

zulip/integrations/zephyr/zephyr_mirror_backend.py

@@ -1012,7 +1012,7 @@ def add_zulip_subscriptions(verbose: bool) -> None:
 
     if len(zephyr_subscriptions) != 0:
         res = zulip_client.add_subscriptions(
-            list({"name": stream} for stream in zephyr_subscriptions),
+            [{"name": stream} for stream in zephyr_subscriptions],
             authorization_errors_fatal=False,
         )
         if res.get("result") != "success":