之前使用某虚拟环境配置Django时已经把各种Mysql的包都装好了,项目也成功开发完了一个,后来开发第二个项目时改将sqlite改为mysql后又诡异地报错了:
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/Applications/PyCharm.app/Contents/helpers/pycharm/_jb_manage_tasks_provider.py", line 25, in <module>
django.setup()
File "/Users/apple/Documents/article/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/Users/apple/Documents/article/lib/python3.6/site-packages/django/apps/registry.py", line 112, in populate
app_config.import_models()
File "/Users/apple/Documents/article/lib/python3.6/site-packages/django/apps/config.py", line 198, in import_models
self.models_module = import_module(models_module_name)
File "/Users/apple/Documents/article/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/Users/apple/Documents/article/lib/python3.6/site-packages/django/contrib/auth/models.py", line 2, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "/Users/apple/Documents/article/lib/python3.6/site-packages/django/contrib/auth/base_user.py", line 47, in <module>
class AbstractBaseUser(models.Model):
File "/Users/apple/Documents/article/lib/python3.6/site-packages/django/db/models/base.py", line 114, in __new__
new_class.add_to_class('_meta', Options(meta, app_label))
File "/Users/apple/Documents/article/lib/python3.6/site-packages/django/db/models/base.py", line 315, in add_to_class
value.contribute_to_class(cls, name)
File "/Users/apple/Documents/article/lib/python3.6/site-packages/django/db/models/options.py", line 205, in contribute_to_class
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
File "/Users/apple/Documents/article/lib/python3.6/site-packages/django/db/__init__.py", line 33, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "/Users/apple/Documents/article/lib/python3.6/site-packages/django/db/utils.py", line 202, in __getitem__
backend = load_backend(db['ENGINE'])
File "/Users/apple/Documents/article/lib/python3.6/site-packages/django/db/utils.py", line 110, in load_backend
return import_module('%s.base' % backend_name)
File "/Users/apple/Documents/article/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "/Users/apple/Documents/article/lib/python3.6/site-packages/django/db/backends/mysql/base.py", line 20, in <module>
) from err
django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module.
Did you install mysqlclient?
因为该虚拟环境之前都是可以正常使用的,很确定已经安装了mysqlclient等各种包,所以应该是Django中文件配置的问题,后来找到原因是需要在项目文件中的__init__.py
中添加:
import pymysql
pymysql.install_as_MySQLdb()
就可以了