python - ubuntu flask问题

Question

这问题是怎么回事，安装了flask了。

Answer 1

sudo apt-get install python-flask

Answer 2

It seems that the werkzeug exception module required by flask is not installed. I installed it using pip and there were no dependency problems.

Answer 3

werkzeug is a very important part of flask. It is usually installed when flask is installed. If you are installing flask with pip now, try sudo apt-get install python-flask

Answer 4

There is a flask folder in the hello.py file directory. When importing the package, python will first look for it in the execution environment directory and then disappear.