https://github.com/python/cpython/commit/dffb90911a585a0921664c8b1c229d0883e65ee7
commit: dffb90911a585a0921664c8b1c229d0883e65ee7
branch: main
author: Raymond Hettinger <[email protected]>
committer: rhettinger <[email protected]>
date: 2024-12-02T20:45:36-06:00
summary:
Speed-up lazy heapq import in collections (gh-127538)
files:
M Lib/collections/__init__.py
diff --git a/Lib/collections/__init__.py b/Lib/collections/__init__.py
index d688141f9b183d..78229ac54b80da 100644
--- a/Lib/collections/__init__.py
+++ b/Lib/collections/__init__.py
@@ -59,6 +59,8 @@
except ImportError:
pass
+heapq = None # Lazily imported
+
################################################################################
### OrderedDict
@@ -633,7 +635,10 @@ def most_common(self, n=None):
return sorted(self.items(), key=_itemgetter(1), reverse=True)
# Lazy import to speedup Python startup time
- import heapq
+ global heapq
+ if heapq is None:
+ import heapq
+
return heapq.nlargest(n, self.items(), key=_itemgetter(1))
def elements(self):
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