Django,TypeError:decode()参数1必须是字符串,而不是None

Question

我正在学习Django,这是我的第一个项目.我正在本教程中研究这个项目.https://docs.djangoproject.com/en/1.4/intro/tutorial01/

当我运行syncdb命令.表已创建.然后它问我是否要添加超级​​用户,我说是的.然后得到以下错误消息.我在stackoverflow上发现了一些类似的问题,但仍然可以解决它.

(django)feelexit@ubuntu:~/.virtualenvs/testDjango$ ./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

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): y
Please enter either "yes" or "no": yes
Traceback (most recent call last):
  File "./manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/feelexit/.virtualenvs/django/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 443, in execute_from_command_line
    utility.execute()
  File "/home/feelexit/.virtualenvs/django/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 382, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/feelexit/.virtualenvs/django/local/lib/python2.7/site-packages/django/core/management/base.py", line 196, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/home/feelexit/.virtualenvs/django/local/lib/python2.7/site-packages/django/core/management/base.py", line 232, in execute
    output = self.handle(*args, **options)
  File "/home/feelexit/.virtualenvs/django/local/lib/python2.7/site-packages/django/core/management/base.py", line 371, in handle
    return self.handle_noargs(**options)
  File "/home/feelexit/.virtualenvs/django/local/lib/python2.7/site-packages/django/core/management/commands/syncdb.py", line 110, in handle_noargs
    emit_post_sync_signal(created_models, verbosity, interactive, db)
  File "/home/feelexit/.virtualenvs/django/local/lib/python2.7/site-packages/django/core/management/sql.py", line 189, in emit_post_sync_signal
    interactive=interactive, db=db)
  File "/home/feelexit/.virtualenvs/django/local/lib/python2.7/site-packages/django/dispatch/dispatcher.py", line 172, in send
    response = receiver(signal=self, sender=sender, **named)
  File "/home/feelexit/.virtualenvs/django/local/lib/python2.7/site-packages/django/contrib/auth/management/__init__.py", line 73, in create_superuser
    call_command("createsuperuser", interactive=True, database=db)
  File "/home/feelexit/.virtualenvs/django/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 150, in call_command
    return klass.execute(*args, **defaults)
  File "/home/feelexit/.virtualenvs/django/local/lib/python2.7/site-packages/django/core/management/base.py", line 232, in execute
    output = self.handle(*args, **options)
  File "/home/feelexit/.virtualenvs/django/local/lib/python2.7/site-packages/django/contrib/auth/management/commands/createsuperuser.py", line 70, in handle
    default_username = get_default_username()
  File "/home/feelexit/.virtualenvs/django/local/lib/python2.7/site-packages/django/contrib/auth/management/__init__.py", line 105, in get_default_username
    default_username = get_system_username()
  File "/home/feelexit/.virtualenvs/django/local/lib/python2.7/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

更新:我使用的是ubuntu 12.04.我找到了可能的解决方案.将以下代码添加到manage.py.然而,旁边有一个免责声明"我不知道这是否会导致任何负面影响." 我正在寻找一种更好的方法来解决它.

import os
os.environ.setdefault('LANG','en_US')

Answer 1

这是Django代码中的一个错误(请参阅django错误报告).

故障单中修复此问题的常用方法是导出shell LANG环境变量.

export LANG="en_US.UTF-8"

那个在SuSE设置上适合我.