当我向模型添加没有默认值的新字段时
some_field = models.IntegerField()
并运行 makemigrations 我收到此消息
`You are trying to add a non-nullable field 'some_field' to sometable without a default; we can't do that (the database needs something to populate existing rows).
Please select a fix:
1) Provide a one-off default now (will be set on all existing rows)
2) Quit, and let me add a default in models.py
Select an option: `
当我在普通控制台中选择第一个选项时，它设置默认值并且工作正常，但是当我在 pycharm manage.py 控制台中执行相同操作时，我收到此错误
Traceback (most recent call last):
File "/opt/pycharm-4.5.2/helpers/pycharm/django_manage.py", line 41, in <module>
run_module(manage_file, None, '__main__', True)
File "/usr/lib/python2.7/runpy.py", line 176, in run_module
fname, loader, pkg_name)
File "/usr/lib/python2.7/runpy.py", line 82, in _run_module_code
mod_name, mod_fname, mod_loader, pkg_name)
File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
exec code in run_globals
File "/home/dima/Python/nflstats/manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/home/dima/envs/nflstats_env/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line
utility.execute()
File "/home/dima/envs/nflstats_env/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 330, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/dima/envs/nflstats_env/local/lib/python2.7/site-packages/django/core/management/base.py", line 393, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/dima/envs/nflstats_env/local/lib/python2.7/site-packages/django/core/management/base.py", line 444, in execute
output = self.handle(*args, **options)
File "/home/dima/envs/nflstats_env/local/lib/python2.7/site-packages/django/core/management/commands/makemigrations.py", line 125, in handle
migration_name=self.migration_name,
File "/home/dima/envs/nflstats_env/local/lib/python2.7/site-packages/django/db/migrations/autodetector.py", line 43, in changes
changes = self._detect_changes(convert_apps, graph)
File "/home/dima/envs/nflstats_env/local/lib/python2.7/site-packages/django/db/migrations/autodetector.py", line 185, in _detect_changes
self.generate_added_fields()
File "/home/dima/envs/nflstats_env/local/lib/python2.7/site-packages/django/db/migrations/autodetector.py", line 763, in generate_added_fields
self._generate_added_field(app_label, model_name, field_name)
File "/home/dima/envs/nflstats_env/local/lib/python2.7/site-packages/django/db/migrations/autodetector.py", line 793, in _generate_added_field
field.default = self.questioner.ask_not_null_addition(field_name, model_name)
File "/home/dima/envs/nflstats_env/local/lib/python2.7/site-packages/django/db/migrations/questioner.py", line 137, in ask_not_null_addition
return self._ask_default()
File "/home/dima/envs/nflstats_env/local/lib/python2.7/site-packages/django/db/migrations/questioner.py", line 111, in _ask_default
code = input(">>> ").decode(sys.stdin.encoding)
TypeError: decode() argument 1 must be string, not None
我不明白，我做错了什么？为什么它在pycharm中不起作用？我怎样才能解决这个问题？我使用 PyCharm 4.5.2 Pro