我最近有了一台新计算机并且一直在尝试重新设置我的开发环境，现在我需要开发一个Django项目。但是，每当我尝试python manage.py runserver，makemigrations，migrate等时，我都会遇到以下错误，并且我不明白为什么。
Traceback (most recent call last):
File "manage.py", line 17, in <module>
execute_from_command_line(sys.argv)
File "/usr/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 312, in execute
django.setup()
File "/usr/local/lib/python2.7/site-packages/django/__init__.py", line 18, in setup
apps.populate(settings.INSTALLED_APPS)
File "/usr/local/lib/python2.7/site-packages/django/apps/registry.py", line 115, in populate
app_config.ready()
File "/usr/local/lib/python2.7/site-packages/debug_toolbar/apps.py", line 15, in ready
dt_settings.patch_all()
File "/usr/local/lib/python2.7/site-packages/debug_toolbar/settings.py", line 232, in patch_all
patch_root_urlconf()
File "/usr/local/lib/python2.7/site-packages/debug_toolbar/settings.py", line 220, in patch_root_urlconf
reverse('djdt:render_panel')
File "/usr/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 550, in reverse
app_list = resolver.app_dict[ns]
File "/usr/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 352, in app_dict
self._populate()
File "/usr/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 285, in _populate
for pattern in reversed(self.url_patterns):
File "/usr/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 402, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/usr/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 396, in urlconf_module
self._urlconf_module = import_module(self.urlconf_name)
File "/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/Users/Lily/Sites/StartupTree/StartupTree/urls.py", line 48, in <module>
+ static(settings.STATIC_URL, document_root=settings.STATICFILES_DIRS[0])
File "/usr/local/lib/python2.7/site-packages/django/conf/urls/__init__.py", line 33, in include
urlconf_module = import_module(urlconf_module)
File "/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/Users/Lily/Sites/StartupTree/branch/urls.py", line 2, in <module>
from branch.views import (
File "/Users/Lily/Sites/StartupTree/branch/views/__init__.py", line 15, in <module>
from app.views import home as home_redirect
File "/Users/Lily/Sites/StartupTree/app/views.py", line 5, in <module>
from emailuser.views import user_login as login_redirect
File "/Users/Lily/Sites/StartupTree/emailuser/views/__init__.py", line 32, in <module>
from branch.modelforms import (
File "/Users/Lily/Sites/StartupTree/branch/modelforms.py", line 139, in <module>
class ExperienceForm(forms.ModelForm):
File "/usr/local/lib/python2.7/site-packages/django/forms/models.py", line 285, in __new__
opts.help_texts, opts.error_messages)
File "/usr/local/lib/python2.7/site-packages/django/forms/models.py", line 212, in fields_for_model
formfield = f.formfield(**kwargs)
File "/usr/local/lib/python2.7/site-packages/django/db/models/fields/related.py", line 1981, in formfield
'queryset': self.rel.to._default_manager.using(db),
File "/usr/local/lib/python2.7/site-packages/django/db/models/manager.py", line 127, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/usr/local/lib/python2.7/site-packages/django/contrib/sites/managers.py", line 66, in get_queryset
**{self._get_field_name() + '__id': settings.SITE_ID})
File "/usr/local/lib/python2.7/site-packages/django/db/models/query.py", line 679, in filter
return self._filter_or_exclude(False, *args, **kwargs)
File "/usr/local/lib/python2.7/site-packages/django/db/models/query.py", line 697, in _filter_or_exclude
clone.query.add_q(Q(*args, **kwargs))
File "/usr/local/lib/python2.7/site-packages/django/db/models/sql/query.py", line 1309, in add_q
clause, require_inner = self._add_q(where_part, self.used_aliases)
File "/usr/local/lib/python2.7/site-packages/django/db/models/sql/query.py", line 1337, in _add_q
allow_joins=allow_joins, split_subq=split_subq,
File "/usr/local/lib/python2.7/site-packages/django/db/models/sql/query.py", line 1208, in build_filter
condition = self.build_lookup(lookups, col, value)
File "/usr/local/lib/python2.7/site-packages/django/db/models/sql/query.py", line 1101, in build_lookup
return final_lookup(lhs, rhs)
File "/usr/local/lib/python2.7/site-packages/django/db/models/lookups.py", line 101, in __init__
self.rhs = self.get_prep_lookup()
File "/usr/local/lib/python2.7/site-packages/django/db/models/lookups.py", line 139, in get_prep_lookup
return self.lhs.output_field.get_prep_lookup(self.lookup_name, self.rhs)
File "/usr/local/lib/python2.7/site-packages/django/db/models/fields/__init__.py", line 727, in get_prep_lookup
return self.get_prep_value(value)
File "/usr/local/lib/python2.7/site-packages/django/db/models/fields/__init__.py", line 985, in get_prep_value
return int(value)
File "/usr/local/lib/python2.7/site-packages/multisite/threadlocals.py", line 57, in __int__
return self.get_default()
File "/usr/local/lib/python2.7/site-packages/multisite/threadlocals.py", line 119, in get_default
raise ValueError('SITE_ID has not been set.')
ValueError: SITE_ID has not been set.
我已经检查了我的settings.py并找到SITE_ID = 1所以我假设它想要的是什么？ （我也是Django的新手，抱歉！）
非常感谢您的帮助！
答案 0 :(得分：0)
使用django-multisite时，您需要按以下方式设置SITE_ID
from multisite import SiteID
SITE_ID = SiteID()
答案 1 :(得分：0)
从命令行介绍您的环境：
$ export SITE_ID = 1