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Improve Warning Suppression Performance by Using set #1932

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Merged
merged 2 commits into from
Mar 4, 2025
Merged

Improve Warning Suppression Performance by Using set #1932

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30a5d7e
feat(performance): improve warning suppression lookup by using set
allrob23 Mar 4, 2025
e58baa1
fix: initialize _no_warn_slugs as a empty set
allrob23 Mar 4, 2025
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6 changes: 3 additions & 3 deletions coverage/control.py
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Original file line number Diff line number Diff line change
Expand Up @@ -258,7 +258,7 @@ def __init__( # pylint: disable=too-many-arguments
self._warn_no_data = True
self._warn_unimported_source = True
self._warn_preimported_source = check_preimported
self._no_warn_slugs: list[str] = []
self._no_warn_slugs: set[str] = set()
self._messages = messages

# A record of all the warnings that have been issued.
Expand Down Expand Up @@ -438,7 +438,7 @@ def _warn(self, msg: str, slug: str | None = None, once: bool = False) -> None:

"""
if not self._no_warn_slugs:
self._no_warn_slugs = list(self.config.disable_warnings)
self._no_warn_slugs = set(self.config.disable_warnings)

if slug in self._no_warn_slugs:
# Don't issue the warning
Expand All @@ -453,7 +453,7 @@ def _warn(self, msg: str, slug: str | None = None, once: bool = False) -> None:

if once:
assert slug is not None
self._no_warn_slugs.append(slug)
self._no_warn_slugs.add(slug)

def _message(self, msg: str) -> None:
"""Write a message to the user, if configured to do so."""
Expand Down