From: Raymond Hettinger <rhettinger@users.noreply.github.com>
Date: Tue, 3 Dec 2024 02:45:36 +0000 (-0600)
Subject: Speed-up lazy heapq import in collections (gh-127538)
X-Git-Tag: v3.14.0a3~143
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=dffb90911a585a0921664c8b1c229d0883e65ee7;p=thirdparty%2FPython%2Fcpython.git

Speed-up lazy heapq import in collections (gh-127538)
---

diff --git a/Lib/collections/__init__.py b/Lib/collections/__init__.py
index d688141f9b18..78229ac54b80 100644
--- a/Lib/collections/__init__.py
+++ b/Lib/collections/__init__.py
@@ -59,6 +59,8 @@ try:
 except ImportError:
     pass
 
+heapq = None  # Lazily imported
+
 
 ################################################################################
 ### OrderedDict
@@ -633,7 +635,10 @@ class Counter(dict):
             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):