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“没有名为‘pysqlite2’的模块”错误

tag-icon • tag-icon 14.04 python django sqlite pip
“没有名为‘pysqlite2’的模块”错误

我正在尝试运行服务器，但出现此错误：

$ python manage.py runserver
Traceback (most recent call last):
  File "/home/user/Demo/lib/python3.4/site-packages/django/db/backends/sqlite3/base.py", line 33, in <module>
    from pysqlite2 import dbapi2 as Database
ImportError: No module named 'pysqlite2'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/user/Demo/lib/python3.4/site-packages/django/db/backends/sqlite3/base.py", line 35, in <module>
    from sqlite3 import dbapi2 as Database
  File "/usr/local/lib/python3.4/sqlite3/__init__.py", line 23, in <module>
    from sqlite3.dbapi2 import *
  File "/usr/local/lib/python3.4/sqlite3/dbapi2.py", line 27, in <module>
    from _sqlite3 import *
ImportError: No module named '_sqlite3'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/user/Demo/lib/python3.4/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
    utility.execute()
  File "/home/user/Demo/lib/python3.4/site-packages/django/core/management/__init__.py", line 354, in execute
    django.setup()
  File "/home/user/Demo/lib/python3.4/site-packages/django/__init__.py", line 21, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/home/user/Demo/lib/python3.4/site-packages/django/apps/registry.py", line 108, in populate
    app_config.import_models(all_models)
  File "/home/user/Demo/lib/python3.4/site-packages/django/apps/config.py", line 202, in import_models
    self.models_module = import_module(models_module_name)
  File "/home/user/Demo/lib/python3.4/importlib/__init__.py", line 109, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 2254, in _gcd_import
  File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
  File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1200, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 1129, in _exec
  File "<frozen importlib._bootstrap>", line 1471, in exec_module
  File "<frozen importlib._bootstrap>", line 321, in _call_with_frames_removed
  File "/home/user/Demo/lib/python3.4/site-packages/django/contrib/auth/models.py", line 40, in <module>
    class Permission(models.Model):
  File "/home/user/Demo/lib/python3.4/site-packages/django/db/models/base.py", line 122, in __new__
    new_class.add_to_class('_meta', Options(meta, **kwargs))
  File "/home/user/Demo/lib/python3.4/site-packages/django/db/models/base.py", line 297, in add_to_class
    value.contribute_to_class(cls, name)
  File "/home/user/Demo/lib/python3.4/site-packages/django/db/models/options.py", line 166, in contribute_to_class
    self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
  File "/home/user/Demo/lib/python3.4/site-packages/django/db/__init__.py", line 40, in __getattr__
    return getattr(connections[DEFAULT_DB_ALIAS], item)
  File "/home/user/Demo/lib/python3.4/site-packages/django/db/utils.py", line 242, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "/home/user/Demo/lib/python3.4/site-packages/django/db/utils.py", line 108, in load_backend
    return import_module('%s.base' % backend_name)
  File "/home/user/Demo/lib/python3.4/importlib/__init__.py", line 109, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 2254, in _gcd_import
  File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
  File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1200, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 1129, in _exec
  File "<frozen importlib._bootstrap>", line 1471, in exec_module
  File "<frozen importlib._bootstrap>", line 321, in _call_with_frames_removed
  File "/home/user/Demo/lib/python3.4/site-packages/django/db/backends/sqlite3/base.py", line 38, in <module>
    raise ImproperlyConfigured("Error loading either pysqlite2 or sqlite3 modules (tried in that order): %s" % exc)
django.core.exceptions.ImproperlyConfigured: Error loading either pysqlite2 or sqlite3 modules (tried in that order): No module named '_sqlite3'

当我尝试安装 Sqlite 时：

$ pip install sqlightCollecting sqlight
  Could not find any downloads that satisfy the requirement sqlight
  No distributions at all found for sqlight

我应该怎么办？

答案1

我找到了主要问题！安装 virtualenv 时我没有使用 root，因此缺少一些文件。

设置虚拟环境时，启动 root shell

sudo -i

然后你可以运行这个命令：

pip install virtualenv

这样就可以同时运行Python3.4和Django1.7了！

或者，就我的情况来说：

Virtualenv 是 python3.4 设置的，我觉得和其他版本不同步。

我将virtualenv设置为使用python2.7：

$ which python
/usr/bin/python
$ virtualenv -p /usr/bin/python

这次，一切都顺利。

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