New GitHub issue #119187 from nineteendo:<br>
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<pre>
# Documentation
I think it would be useful to mention that a for loop is more efficient in a case like this:
```diff
-return any(key in m for m in self.maps)
+for mapping in self.maps:
+ if key in mapping:
+ return True
+return False
```
</pre>
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<a href="https://github.com/python/cpython/issues/119187">View on GitHub</a>
<p>Labels: docs</p>
<p>Assignee: </p>