BUG！！！======> syncdb 时 “ TypeError: decode() argument 1 must be string, not None ”

在路由器上跑django时，运行syncdb命令时出现一下错误-------->

[root@DD-WRT erya]$ python2.6 manage.py syncdb
Creating tables ...
Creating table auth_permission
Creating table auth_group_permissions
Creating table auth_group
Creating table auth_user_user_permissions
Creating table auth_user_groups
Creating table auth_user
Creating table django_content_type
Creating table django_session
Creating table django_site
Creating table django_admin_log

You just installed Django's auth system, which means you don't have any superusers defined.
Would you like to create one now? (yes/no): yes
Traceback (most recent call last):
  File "manage.py", line 10, in 
    execute_from_command_line(sys.argv)
  File "/opt/local/lib/python2.6/site-packages/django/core/management/__init__.py", line 443, in execute_from_command_line
    utility.execute()
  File "/opt/local/lib/python2.6/site-packages/django/core/management/__init__.py", line 382, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/opt/local/lib/python2.6/site-packages/django/core/management/base.py", line 196, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/opt/local/lib/python2.6/site-packages/django/core/management/base.py", line 232, in execute
    output = self.handle(*args, **options)
  File "/opt/local/lib/python2.6/site-packages/django/core/management/base.py", line 371, in handle
    return self.handle_noargs(**options)
  File "/opt/local/lib/python2.6/site-packages/django/core/management/commands/syncdb.py", line 110, in handle_noargs
    emit_post_sync_signal(created_models, verbosity, interactive, db)
  File "/opt/local/lib/python2.6/site-packages/django/core/management/sql.py", line 189, in emit_post_sync_signal
    interactive=interactive, db=db)
  File "/opt/local/lib/python2.6/site-packages/django/dispatch/dispatcher.py", line 172, in send
    response = receiver(signal=self, sender=sender, **named)
  File "/opt/local/lib/python2.6/site-packages/django/contrib/auth/management/__init__.py", line 73, in create_superuser
    call_command("createsuperuser", interactive=True, database=db)
  File "/opt/local/lib/python2.6/site-packages/django/core/management/__init__.py", line 150, in call_command
    return klass.execute(*args, **defaults)
  File "/opt/local/lib/python2.6/site-packages/django/core/management/base.py", line 232, in execute
    output = self.handle(*args, **options)
  File "/opt/local/lib/python2.6/site-packages/django/contrib/auth/management/commands/createsuperuser.py", line 70, in handle
    default_username = get_default_username()
  File "/opt/local/lib/python2.6/site-packages/django/contrib/auth/management/__init__.py", line 105, in get_default_username
    default_username = get_system_username()
  File "/opt/local/lib/python2.6/site-packages/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

    初步断定decode()的话，问题应该出现在语言编码的问题，想到了环境变量，于是设置：

[root@DD-WRT erya]$ export LC_ALL=en_US.UTF-8
[root@DD-WRT erya]$ python2.6 manage.py syncdb
Creating tables ...
Installing custom SQL ...
Installing indexes ...
Installed 0 object(s) from 0 fixture(s)

    创建superuser:

[root@DD-WRT erya]$ python2.6 manage.py  createsuperuser
Username (leave blank to use 'root'): shi
E-mail address: er@126.com
Password: 
Password (again): 
Superuser created successfully.

    BUG除掉！！！将export LC_ALL=en_US.UTF-8写入到profile或者.bashrc中即可。

引用：

The immediate resolution for this, assuming you are using bash as your shell:

$ export LC_ALL=en_US.UTF-8

$ export LANG=en_US.UTF-8

This will set your locale for that session, and syncdb will work. You can add this to your profile and make it permanent for your shells.

You can use the locale command to see the current settings, and locale -a to see what locales are available to you. en_US.UTF-8 is a generic safe one, but you may have other preferences.

转载于:https://www.cnblogs.com/wenjiashe521/archive/2012/08/24/2653773.html