[patch] manage.py createsuperuser fails when locale is not set

[Niels Poppe]

When locale(1) is like
LANG=
LC_CTYPE="C"
LC_COLLATE="C"
LC_TIME="C"
LC_NUMERIC="C"
LC_MONETARY="C"
LC_MESSAGES="C"
LC_ALL=

then "./manage.py createsuperuser" results in a traceback ending

File "/usr/lib/py-dev/django-trunk/django/contrib/auth/management/__init__.py", line 85, in get_system_username
    return getpass.getuser().decode(locale.getdefaultlocale()[1])
TypeError: decode() argument 1 must be string, not None

Since get_system_username() tries to guard against restricted environments like being run in a chroot() environment chances are there is no sane LANG environment either — resulting in getdefaultlocale() returning (None, None).

Assuming ascii encoding is probably okay because UnicodeDecodeError is catched anyway. Calling decode() with ‘ignore’ or not is a matter of taste.

See attached patch.

[Niels Poppe]

patches get_system_username() to function correctly when locale is not set up

[Karen Tracey]

Duplicate of #17022, #16017