gh-112998: zipfile: fix extractall makedirs race condition

pbsds · pbsds · commit dc3f81e47f75 · 2023-12-12T10:29:00.000+01:00
diff --git a/Lib/zipfile/__init__.py b/Lib/zipfile/__init__.py
@@ -1781,11 +1781,11 @@ def _extract_member(self, member, targetpath, pwd):
         # Create all upper directories if necessary.
         upperdirs = os.path.dirname(targetpath)
         if upperdirs and not os.path.exists(upperdirs):
-            os.makedirs(upperdirs)
+            os.makedirs(upperdirs, exist_ok=True)
 
         if member.is_dir():
             if not os.path.isdir(targetpath):
-                os.mkdir(targetpath)
+                os.mkdir(targetpath, exist_ok=True)
             return targetpath
 
         with self.open(member, pwd=pwd) as source, \
diff --git a/Misc/NEWS.d/next/Library/2023-12-12-10-25-46.gh-issue-112998.F2QyD0.rst b/Misc/NEWS.d/next/Library/2023-12-12-10-25-46.gh-issue-112998.F2QyD0.rst
@@ -0,0 +1,2 @@
+`zipfile`` - Avoid race condition creating parent directories when
+extracting concurrently.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	+`zipfile`` - Avoid race condition creating parent directories when
	`2`	`+extracting concurrently.`