Backport of r55752: make time.strptime() behave better when whitespace is in

the format arguments.

Lib/_strptime.py

@@ -253,7 +253,7 @@ class TimeRE(dict):
         regex_chars = re_compile(r"([\\.^$*+?\(\){}\[\]|])")
         format = regex_chars.sub(r"\\\1", format)
         whitespace_replacement = re_compile('\s+')
-        format = whitespace_replacement.sub('\s*', format)
+        format = whitespace_replacement.sub('\s+', format)
         while '%' in format:
             directive_index = format.index('%')+1
             processed_format = "%s%s%s" % (processed_format,

Lib/test/test_strptime.py

@@ -190,6 +190,15 @@ class TimeRETests(unittest.TestCase):
                         "locale data that contains regex metacharacters is not"
                         " properly escaped")
 
+    def test_whitespace_substitution(self):
+        # When pattern contains whitespace, make sure it is taken into account
+        # so as to not allow to subpatterns to end up next to each other and
+        # "steal" characters from each other.
+        pattern = self.time_re.pattern('%j %H')
+        self.failUnless(not re.match(pattern, "180"))
+        self.failUnless(re.match(pattern, "18 0"))
+
+
 class StrptimeTests(unittest.TestCase):
     """Tests for _strptime.strptime."""
 

Misc/NEWS

@@ -12,6 +12,9 @@ What's New in Python 2.5.2c1?
 Library
 -------
 
+- Bug #1730389: Have time.strptime() match spaces in a format argument with
+  ``\s+`` instead of ``\s*``.
+
 - SF 1668596/1720897: distutils now copies data files
   even if package_dir is empty.