如何解決“沒有名為 mysqldb 的模塊”？

Question

我是python的新手。 我正在關注教程系列 tk 使用燒瓶制作網站。 但是當我填寫聯系表格然后單擊發送時，我收到此錯誤

ModuleNotFoundError: No module named 'MySQLdb'

Traceback (most recent call last)
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\sqlalchemy\util\_collections.py", line 1020, in __call__
return self.registry[key]
During handling of the above exception, another exception occurred:
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 2464, in __call__
return self.wsgi_app(environ, start_response)
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 2450, in wsgi_app
response = self.handle_exception(e)
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 1867, in handle_exception
reraise(exc_type, exc_value, tb)
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\_compat.py", line 39, in reraise
raise value
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 2447, in wsgi_app
response = self.full_dispatch_request()
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 1952, in full_dispatch_request
rv = self.handle_user_exception(e)
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 1821, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\_compat.py", line 39, in reraise
raise value
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 1950, in full_dispatch_request
rv = self.dispatch_request()
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask\app.py", line 1936, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "C:\Users\acer\PycharmProjects\webdev.flask\first.1.py", line 46, in contact
db.session.add(entry)
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\sqlalchemy\orm\scoping.py", line 163, in do
return getattr(self.registry(), name)(*args, **kwargs)
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\sqlalchemy\util\_collections.py", line 1022, in __call__
return self.registry.setdefault(key, self.createfunc())
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\sqlalchemy\orm\session.py", line 3286, in __call__
return self.class_(**local_kw)
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask_sqlalchemy\__init__.py", line 138, in __init__
bind = options.pop('bind', None) or db.engine
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask_sqlalchemy\__init__.py", line 943, in engine
return self.get_engine()
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask_sqlalchemy\__init__.py", line 962, in get_engine
return connector.get_engine()
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask_sqlalchemy\__init__.py", line 556, in get_engine
self._engine = rv = self._sa.create_engine(sa_url, options)
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\flask_sqlalchemy\__init__.py", line 972, in create_engine
return sqlalchemy.create_engine(sa_url, **engine_opts)
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\sqlalchemy\engine\__init__.py", line 500, in create_engine
return strategy.create(*args, **kwargs)
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\sqlalchemy\engine\strategies.py", line 87, in create
dbapi = dialect_cls.dbapi(**dbapi_args)
File "C:\Users\acer\AppData\Local\Programs\Python\Python38-32\Lib\site-packages\sqlalchemy\dialects\mysql\mysqldb.py", line 118, in dbapi
return __import__("MySQLdb")
ModuleNotFoundError: No module named 'MySQLdb'

我嘗試安裝 mysqlient 但它也給出了“無法構建輪子”的錯誤。 我正在使用 python 3.8

如何解決這個問題？

Answer 1

1. 如果您使用 pycharm，則文件 -> 設置 -> 解釋器 -> +（右）。 在那里安裝wheel和mysql客戶端（並不總是最新版本有效）
2. 如果手動我假設您使用的是虛擬環境，那么您需要激活它並且它已經有“pip install wheel”還有mysqlclient