Apply the second version of SF patch http://www.python.org/sf/536241
Add a method zfill to str, unicode and UserString and change
Lib/string.py accordingly.
This activates the zfill version in unicodeobject.c that was
commented out and implements the same in stringobject.c. It also
adds the test for unicode support in Lib/string.py back in and
uses repr() instead() of str() (as it was before Lib/string.py 1.62)
diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
index 4b77e75..29dd819 100644
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -206,8 +206,18 @@
test('capwords', u'abc\tdef\nghi', u'Abc Def Ghi')
test('capwords', u'abc\t def \nghi', u'Abc Def Ghi')
-verify(string.zfill(u'34', 1) == u'34')
-verify(string.zfill(u'34', 5) == u'00034')
+test('zfill', u'123', u'123', 2)
+test('zfill', u'123', u'123', 3)
+test('zfill', u'123', u'0123', 4)
+test('zfill', u'+123', u'+123', 3)
+test('zfill', u'+123', u'+123', 4)
+test('zfill', u'+123', u'+0123', 5)
+test('zfill', u'-123', u'-123', 3)
+test('zfill', u'-123', u'-123', 4)
+test('zfill', u'-123', u'-0123', 5)
+test('zfill', u'', u'000', 3)
+test('zfill', u'34', u'34', 1)
+test('zfill', u'34', u'00034', 5)
# Comparisons:
print 'Testing Unicode comparisons...',