(env3.6.6) mac126@ubuntu:~/Desktop/13/day3-1$ python manage.py db init Traceback (most recent call last): File "manage.py", line 13, in <module> manage.run() File "/home/mac126/.pyenv/versions/3.6.6/envs/env3.6.6/lib/python3.6/site-packages/flask_script/__init__.py", line 417, in run result = self.handle(argv[0], argv[1:]) File "/home/mac126/.pyenv/versions/3.6.6/envs/env3.6.6/lib/python3.6/site-packages/flask_script/__init__.py", line 386, in handle res = handle(*args, **config) File "/home/mac126/.pyenv/versions/3.6.6/envs/env3.6.6/lib/python3.6/site-packages/flask_script/commands.py", line 216, in __call__ return self.run(*args, **kwargs) File "/home/mac126/.pyenv/versions/3.6.6/envs/env3.6.6/lib/python3.6/site-packages/flask_migrate/__init__.py", line 95, in wrapped f(*args, **kwargs) File "/home/mac126/.pyenv/versions/3.6.6/envs/env3.6.6/lib/python3.6/site-packages/flask_migrate/__init__.py", line 125, in init directory = current_app.extensions['migrate'].directory KeyError: 'migrate'
看到這個錯誤，對於一個新手來說那是充滿恐懼的，不知道怎么去解決，首先想到的一個工具應該是百度，萬能的百度。不過百度有的時候查到的問題和自己的情況不一樣，那就綜合起來看看自己的代碼是不是有問題。
上面這個init_ext(app)這個函數需要添加到__init__.py文件里面，即可解決KeyError: 'migrate'錯誤