import error: 'No module named' *does* exist

I set the PYTHONPATH to '.' and that solved it for me.

export PYTHONPATH='.'

For a one-liner you could as easily do:

PYTHONPATH='.' your_python_script

These commands are expected to be run in a terminal

The PYTHONPATH is not set properly. Export it using export PYTHONPATH=$PYTHONPATH:/path/to/your/modules .

I had the same problem, and I solved it by adding the following code to the top of the python file:

import sys
import os

sys.path.append(os.path.dirname(os.path.dirname(os.path.dirname(__file__))))

Number of repetitions of os.path.dirname depends on where is the file located your project hierarchy. For instance, in my case the project root is three levels up.

My usual trick is to simply print sys.path in the actual context where the import problem happens. In your case it'd seem that the place for the print is in /home/hughdbrown/.local/bin/pserve . Then check dirs & files in the places that path shows..

You do that by first having:

import sys

in python 3 with the print function:

print(sys.path)

or in python 2 with print expression:

print sys.path