Fail to detect pyflakes for Python3

This is originated from a bug report:

I set nothing in the Environment. My Python project is supposed to use the system-wide Python 3. I leave everything default in the project configuration. But Pyflakes is still not detected.

What should I do more?

Does your system have multiple versions of Python installed? Could you share a screenshot of your Prefs > Languages > Python 3 screen?

Hello. I have only one Python 3 instance:

Could you match up your PYTHONPATH and PYTHONHOME env variables in Presf > Environment to what they are when you execute python from your shell?

When I execute python from shell, both PYTHONPATH and PYTHONHOME are not set:

quan@Vervet ~$ echo $PYTHONPATH

quan@Vervet ~$ echo $PYTHONHOME

quan@Vervet ~$ python3
Python 3.4.3 (default, Mar 26 2015, 22:03:40)
[GCC 4.9.2] on linux
Type “help”, “copyright”, “credits” or “license” for more information.

import pyflakes

So, to leave them not set in Prefs > Environment is actually to make them match my environment variables.

I explicitly set PYTHONPATH in project’s environment variable, but Komodo still failed

Could you try the python macro @ervumlens shared here and see if it matches the python you are using from your terminal?

Relevant bug: