[英]How do I solve this syntax error in manage.py?
我正在运行带有 mariadb 的 django 应用程序。 它曾经工作得很好,但是我已经让这个项目闲置了一段时间,现在我刚刚回到它,我不知道为什么它现在会崩溃。
尝试运行 python manage.py makemigrations 时出现以下错误:
File "manage.py", line 16
) from exc
^
SyntaxError: invalid syntax
这是我的manage.py:
#!/usr/bin/env python
"""Django's command-line utility for administrative tasks."""
import os
import sys
def main():
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'MyDB.settings')
try:
from django.core.management import execute_from_command_line
except ImportError as exc:
raise ImportError(
"Couldn't import Django. Are you sure it's installed and "
"available on your PYTHONPATH environment variable? Did you "
"forget to activate a virtual environment?"
) from exc
execute_from_command_line(sys.argv)
if __name__ == '__main__':
main()
现在我会诚实的。 我可能知道问题是什么。 我没有使用venv。 我在这个系统上有多个安装。 问题是我不记得我在这个项目中使用了什么。 I have python 2.7 and python 3. Python 2.7 runs Django 1.11 and python 3 runs django 2.2.7.
当我在 python 3 中运行 manage.py 时,它返回以下内容:
Traceback (most recent call last):
File "/usr/local/lib/python3.6/dist-packages/django/db/backends/mysql/base.py", line 15, in <module>
import MySQLdb as Database
File "/usr/local/lib/python3.6/dist-packages/MySQLdb/__init__.py", line 18, in <module>
from . import _mysql
ImportError: libmariadbclient.so.18: cannot open shared object file: No such file or directory
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "manage.py", line 21, in <module>
main()
File "manage.py", line 17, in main
execute_from_command_line(sys.argv)
File "/usr/local/lib/python3.6/dist-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python3.6/dist-packages/django/core/management/__init__.py", line 357, in execute
django.setup()
File "/usr/local/lib/python3.6/dist-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/usr/local/lib/python3.6/dist-packages/django/apps/registry.py", line 114, in populate
app_config.import_models()
File "/usr/local/lib/python3.6/dist-packages/django/apps/config.py", line 211, in import_models
self.models_module = import_module(models_module_name)
File "/usr/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 "/usr/local/lib/python3.6/dist-packages/django/contrib/auth/models.py", line 2, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "/usr/local/lib/python3.6/dist-packages/django/contrib/auth/base_user.py", line 47, in <module>
class AbstractBaseUser(models.Model):
File "/usr/local/lib/python3.6/dist-packages/django/db/models/base.py", line 117, in __new__
new_class.add_to_class('_meta', Options(meta, app_label))
File "/usr/local/lib/python3.6/dist-packages/django/db/models/base.py", line 321, in add_to_class
value.contribute_to_class(cls, name)
File "/usr/local/lib/python3.6/dist-packages/django/db/models/options.py", line 204, in contribute_to_class
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
File "/usr/local/lib/python3.6/dist-packages/django/db/__init__.py", line 28, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "/usr/local/lib/python3.6/dist-packages/django/db/utils.py", line 201, in __getitem__
backend = load_backend(db['ENGINE'])
File "/usr/local/lib/python3.6/dist-packages/django/db/utils.py", line 110, in load_backend
return import_module('%s.base' % backend_name)
File "/usr/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "/usr/local/lib/python3.6/dist-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?
现在这对我来说似乎是一个数据库错误。 但我之前在 MariaDB 上工作得很好。 我什至按照 django 页面和 mariadb 页面上的安装指南中的书完全卸载并重新安装了 mariadb。 我现在真的陷入了困境。 谁能指出我正确的方向?
编辑:我已经尝试过安装 pymysql 等其他问题的解决方案。 但到目前为止我似乎无法找到答案
尝试使用 python3 运行应用程序(如果您使用的是 python 3.x 而不是 python
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