如何使Flask与Python 3兼容？

Question

I have written an API in my personal machine and I want to make it run on a remote machine.

I have used Python 3 and flask with Pycharmm without any problems in my own machine. However I connect the remote machine using ssh. So it's impossible to configure environment with an IDE.

When I type flask --version the output is as below:

Flask 0.12.2 
Python 2.7.12 (default, Jul  1 2016, 15:12:24)  
[GCC 5.4.0 20160609]

Python 3 is installed. I have a choice to run the python script using python3 service.py . At that time I am given an error as ImportError: No module named 'flask' . When I use flask run I am given errors related to Python 2. I have used some features of Python 3 which are not included in Python 2.

How can I configure Flask to run using Python 3 in that environment?

Answer 1

Try pip3 install flask . Ideally you should be doing this in a virtual environment . Also, you might want to look at dockerizing your code since it will help reduce conflict between different python versions.

As an addition I have installed the pip3 using apt-get install python3-pip