Collectives™ on Stack Overflow

Find centralized, trusted content and collaborate around the technologies you use most.

Teams

Q&A for work

Connect and share knowledge within a single location that is structured and easy to search.

Traceback (most recent call last):
File "app.py", line 1, in <module>
from flask import Flask
ImportError: No module named Flask
I do have flask installed. I was thinking it's a $PATH issue. I don't really know where to begin as far as troubleshooting goes.
which flask gives me:
/usr/local/bin/flask
which python gives me:
/usr/bin/python
Any help is much appreciated, there are other similar issues out there but those solutions have not helped. Happy to answer any questions. Thank you.
Answers to questions:
Q. Which Python version? A. Python 2.7.10 
Q. How did you install Flask? A. pip install flask
                If pip installation didn't fail, all paths should be correct. You could check $PYTHONPATH.  @dim has a good point. Do you have a folder named flask or a file you named flask.py in the same directory?
– CAB
                Oct 12, 2016 at 3:12
It looks like that you are using linux, if you are using ubuntu
try: (similar for other linux distributions)
sudo apt-get install python-flask
It helped me install many packages that pip fails to install.
You can try to uninstall and to reinstall it again(you can follow this link for more detaile) :
http://flask.pocoo.org/docs/0.12/installation/#installation
You can take anaconda and there you can make enviroment for every version of python .Anaconda is getting very easy from this link:
https://docs.anaconda.com/anaconda/install/
Then you can open terminal and pip install flask (if you are on windows) or conda pip install flask .
I recommand to use python3.5 not python 2.7 .
pip3 install flask
and if you fail (you are likely to get an command prompt error as below)
'pip3' is not recognized as an internal or external command,
operable program or batch file.
py -3 -mpip install flask on windows
this command installs flask module on python 3, and then you could run your script.
worked for me!
        
Thanks for contributing an answer to Stack Overflow!
Please be sure to answer the question. Provide details and share your research!
But avoid …
Asking for help, clarification, or responding to other answers.
Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.