找不到名为“flask_sqlalchemy”的模块

Question

我正在尝试对我的 flask 应用程序进行身份验证，然后我开始按照本教程进行操作： https://www.digitalocean.com/community/tutorials/how-to-add-authentication-to-your-app-with -烧瓶登录

然后我遇到了以下问题：

127.0.0.1 - - [29/Aug/2020 21:46:13] "GET / HTTP/1.1" 500 -
Traceback (most recent call last):
  File "/home/gabriel_rc/4Linux/flask_auth_app/project/__init__.py", line 2, in <module>
    from flask_sqlalchemy import SQLAlchemy
ModuleNotFoundError: No module named 'flask_sqlalchemy'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/gabriel_rc/.pyenv/versions/3.7.2/lib/python3.7/site-packages/flask/cli.py", line 338, in __call__
    self._flush_bg_loading_exception()
  File "/home/gabriel_rc/.pyenv/versions/3.7.2/lib/python3.7/site-packages/flask/cli.py", line 326, in _flush_bg_loading_exception
    reraise(*exc_info)
  File "/home/gabriel_rc/.pyenv/versions/3.7.2/lib/python3.7/site-packages/flask/_compat.py", line 39, in reraise
    raise value
  File "/home/gabriel_rc/.pyenv/versions/3.7.2/lib/python3.7/site-packages/flask/cli.py", line 314, in _load_app
    self._load_unlocked()
  File "/home/gabriel_rc/.pyenv/versions/3.7.2/lib/python3.7/site-packages/flask/cli.py", line 330, in _load_unlocked
    self._app = rv = self.loader()
  File "/home/gabriel_rc/.pyenv/versions/3.7.2/lib/python3.7/site-packages/flask/cli.py", line 388, in load_app
    app = locate_app(self, import_name, name)
  File "/home/gabriel_rc/.pyenv/versions/3.7.2/lib/python3.7/site-packages/flask/cli.py", line 247, in locate_app
    "\n\n{tb}".format(name=module_name, tb=traceback.format_exc())
flask.cli.NoAppException: While importing "project", an ImportError was raised:

Traceback (most recent call last):
  File "/home/gabriel_rc/.pyenv/versions/3.7.2/lib/python3.7/site-packages/flask/cli.py", line 240, in locate_app
    __import__(module_name)
  File "/home/gabriel_rc/4Linux/flask_auth_app/project/__init__.py", line 2, in <module>
    from flask_sqlalchemy import SQLAlchemy
ModuleNotFoundError: No module named 'flask_sqlalchemy'

Ps：下面的archive /home/gabriel_rc/4Linux/flask_auth_app/project/ init .py和我说的教程是一样的。

我怎么解决这个问题？

Answer 1

你可以做pip install Flask-SQLAlchemy