[1.6.x] Fixed #21627 -- Added unicode_literals to changepassword command.

Fixed a crash when executing changepassword command when the user object
representation contained non-ASCII characters.

Backport of 398642fd9b from master

django/contrib/auth/management/commands/changepassword.py

@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 import getpass
 from optparse import make_option
 

django/contrib/auth/tests/test_management.py

@@ -82,6 +82,18 @@ class ChangepasswordManagementCommandTestCase(TestCase):
         with self.assertRaises(CommandError):
             command.execute("joe", stdout=self.stdout, stderr=self.stderr)
 
+    def test_that_changepassword_command_works_with_nonascii_output(self):
+        """
+        #21627 -- Executing the changepassword management command should allow
+        non-ASCII characters from the User object representation.
+        """
+        # 'Julia' with accented 'u':
+        models.User.objects.create_user(username='J\xfalia', password='qwerty')
+
+        command = changepassword.Command()
+        command._get_pass = lambda *args: 'not qwerty'
+
+        command.execute("J\xfalia", stdout=self.stdout)
 
 @skipIfCustomUser
 class CreatesuperuserManagementCommandTestCase(TestCase):

docs/releases/1.6.2.txt

@@ -11,3 +11,6 @@ Bug fixes
 
 * Prevented the base geometry object of a prepared geometry to be garbage
   collected, which could lead to crash Django (#21662).
+
+* Fixed a crash when executing the :djadmin:`changepassword` command when the
+  user object representation contained non-ASCII characters (#21627).