我是 python 和 django 的新手，最近遇到了一些问题。Django-admin.py runserver 不起作用（ubuntu 12.04）。
终端错误代码：
linas@ubuntu:~$ django-admin.py runserver
Traceback (most recent call last):
File "/usr/local/bin/django-admin.py", line 5, in <module>
management.execute_from_command_line()
File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 443, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 382, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 261, in fetch_command
klass = load_command_class(app_name, subcommand)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 69, in load_command_class
module = import_module('%s.management.commands.%s' % (app_name, name))
File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py", line 35, in import_module
__import__(name)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/runserver.py", line 8, in <module>
from django.core.servers.basehttp import AdminMediaHandler, run, WSGIServerException, get_internal_wsgi_application
File "/usr/local/lib/python2.7/dist-packages/django/core/servers/basehttp.py", line 26, in <module>
from django.views import static
File "/usr/local/lib/python2.7/dist-packages/django/views/static.py", line 95, in <module>
template_translatable = ugettext_noop(u"Index of %(directory)s")
File "/usr/local/lib/python2.7/dist-packages/django/utils/translation/__init__.py", line 75, in gettext_noop
return _trans.gettext_noop(message)
File "/usr/local/lib/python2.7/dist-packages/django/utils/translation/__init__.py", line 48, in __getattr__
if settings.USE_I18N:
File "/usr/local/lib/python2.7/dist-packages/django/utils/functional.py", line 184, in inner
self._setup()
File "/usr/local/lib/python2.7/dist-packages/django/conf/__init__.py", line 40, in _setup
raise ImportError("Settings cannot be imported, because environment variable %s is undefined." % ENVIRONMENT_VARIABLE)
ImportError: Settings cannot be imported, because environment variable DJANGO_SETTINGS_MODULE is undefined.
谢谢你的帮助。
编辑：这是我使用 ./manage.py runserver 时得到的
linas@ubuntu:~/Dokumentai/python/FirstBlog$ ./manage.py runserver
Validating models...
Unhandled exception in thread started by <bound method Command.inner_run of <django.contrib.staticfiles.management.commands.runserver.Command object at 0x1148c90>>
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/runserver.py", line 91, in inner_run
self.validate(display_num_errors=True)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 266, in validate
num_errors = get_validation_errors(s, app)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/validation.py", line 103, in get_validation_errors
connection.validation.validate_field(e, opts, f)
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/mysql/validation.py", line 14, in validate_field
db_version = self.connection.get_server_version()
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/mysql/base.py", line 411, in get_server_version
self.cursor()
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/__init__.py", line 306, in cursor
cursor = self.make_debug_cursor(self._cursor())
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/mysql/base.py", line 387, in _cursor
self.connection = Database.connect(**kwargs)
File "/usr/local/lib/python2.7/dist-packages/MySQL_python-1.2.3-py2.7-linux-x86_64.egg/MySQLdb/__init__.py", line 81, in Connect
return Connection(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/MySQL_python-1.2.3-py2.7-linux-x86_64.egg/MySQLdb/connections.py", line 187, in __init__
super(Connection, self).__init__(*args, **kwargs2)
_mysql_exceptions.OperationalError: (1049, "Unknown database 'FirstBlog'")