Checkin the test of patch #1400181.

Lib/test/test_unicode.py

@@ -411,6 +411,20 @@ class UnicodeTest(
                 return u'\u1234'
         self.assertEqual('%s' % Wrapper(), u'\u1234')
 
+    def test_format_float(self):
+        try:
+            import locale
+            orig_locale = locale.setlocale(locale.LC_ALL)
+            locale.setlocale(locale.LC_ALL, 'de_DE')
+        except (ImportError, locale.Error):
+            return # skip if we can't set locale
+
+        try:
+            # should not format with a comma, but always with C locale
+            self.assertEqual(u'1.0', u'%.1f' % 1.0)
+        finally:
+            locale.setlocale(locale.LC_ALL, orig_locale)
+
     def test_constructor(self):
         # unicode(obj) tests (this maps to PyObject_Unicode() at C level)