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pythonpylintmoto

pylint fails with "unable to import moto", python can import it

I'm trying to pylint my testsuite that uses moto module for AWS API mockup.

This is my super simple testcase:

import moto

Unfortunately it fails pylint:

~/prj $ pylint test_moto.py 
************* Module test_test
test_moto.py:1:0: E0401: Unable to import 'moto' (import-error)
test_moto.py:1:0: W0611: Unused import moto (unused-import)

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However I do have moto installed in my virtualenv and it works:

~/prj $ python
Python 3.6.8 (default, Oct  7 2019, 12:59:55) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import moto
>>> moto.__version__
'1.3.14'
>>>

This is my pylint:

~/prj $ pylint --version
pylint 2.3.1
astroid 2.2.5
Python 3.6.8 (default, Oct  7 2019, 12:59:55) 
[GCC 8.3.0]

Both python and pylint are in the virtualenv:

~/prj $ which python
/home/me/.virtualenvs/prjenv/bin/python
~/prj $ which pylint
/home/me/.virtualenvs/prjenv/bin/pylint

Why is pylint complaining about the import? How can I stop it?

Solution

  • It turns out it's an issue with pylint 2.3.x that doesn't work well with boto3 and in turn with moto. See https://github.com/PyCQA/pylint/issues/3261

    Downgrading to pylint 2.2.x solves this problem.