commit fc070313ddc6868b3679ee8d8e59e2e6bfb12406
author Mark Dickinson <dickinsm@gmail.com> Sun Aug 01 10:43:42 2010 +0000
committer Mark Dickinson <dickinsm@gmail.com> Sun Aug 01 10:43:42 2010 +0000
tree 35384e656930603ac0562d77eef4bdc52338f984
parent ea6ff81323a6e68c4ce3287011d7319993c66e57

Merged revisions 83400 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r83400 | mark.dickinson | 2010-08-01 11:41:49 +0100 (Sun, 01 Aug 2010) | 7 lines

  Issue #9416: Fix some issues with complex formatting where the
  output with no type specifier failed to match the str output:

    - format(complex(-0.0, 2.0), '-') omitted the real part from the output,
    - format(complex(0.0, 2.0), '-') included a sign and parentheses.
........

Lib/test/test_complex.py

diff --git a/Lib/test/test_complex.py b/Lib/test/test_complex.py
index f28bb69..52429ad 100644
--- a/Lib/test/test_complex.py
+++ b/Lib/test/test_complex.py
@@ -480,6 +480,16 @@
         self.assertEqual(format(z, '-'), str(z))
         self.assertEqual(format(z, '<'), str(z))
         self.assertEqual(format(z, '10'), str(z))
+        z = complex(0.0, 3.0)
+        self.assertEqual(format(z, ''), str(z))
+        self.assertEqual(format(z, '-'), str(z))
+        self.assertEqual(format(z, '<'), str(z))
+        self.assertEqual(format(z, '2'), str(z))
+        z = complex(-0.0, 2.0)
+        self.assertEqual(format(z, ''), str(z))
+        self.assertEqual(format(z, '-'), str(z))
+        self.assertEqual(format(z, '<'), str(z))
+        self.assertEqual(format(z, '3'), str(z))
 
         self.assertEqual(format(1+3j, 'g'), '1+3j')
         self.assertEqual(format(3j, 'g'), '0+3j')