Merged revisions 72893 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r72893 | martin.v.loewis | 2009-05-24 21:30:52 +0200 (So, 24 Mai 2009) | 3 lines

  Issue #6050: Don't fail extracting a directory from a zipfile if
  the directory already exists.
........

Lib/test/test_zipfile.py

@@ -1012,6 +1012,11 @@ class TestWithDirectory(unittest.TestCase):
         self.assertTrue(os.path.isdir(os.path.join(TESTFN2, "a", "b")))
         self.assertTrue(os.path.exists(os.path.join(TESTFN2, "a", "b", "c")))
 
+    def test_bug_6050(self):
+        # Extraction should succeed if directories already exist
+        os.mkdir(os.path.join(TESTFN2, "a"))
+        self.testExtractDir()
+
     def testStoreDir(self):
         os.mkdir(os.path.join(TESTFN2, "x"))
         zipf = zipfile.ZipFile(TESTFN, "w")

Lib/zipfile.py

@@ -978,7 +978,8 @@ class ZipFile:
             os.makedirs(upperdirs)
 
         if member.filename[-1] == '/':
-            os.mkdir(targetpath)
+            if not os.path.isdir(targetpath):
+                os.mkdir(targetpath)
             return targetpath
 
         source = self.open(member, pwd=pwd)

Misc/NEWS

@@ -32,6 +32,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #6050: Don't fail extracting a directory from a zipfile if
+  the directory already exists.
+
 - Issue #1309352: fcntl now converts its third arguments to a C `long` rather
   than an int, which makes some operations possible under 64-bit Linux (e.g.
   DN_MULTISHOT with F_NOTIFY).