Pylint does not detect a missing relative import when an absolute import with the same name is present

[pylint-bot]

Originally reported by: Ignacio Rossi (BitBucket: pignacio, GitHub: @pignacio?)

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If there's no mock module at the same level, the following code, when linted, produces an expected "Unable to import 'mock'" error

#!python

from .mock import patch

patch('a.b')

But, if the mock library is present (via pip install mock), the error dissapears, even though the relative import keeps failing.

Tested on a clean virtualenv using latest version. Here's my pip freeze

argparse==1.2.1
astroid==1.3.6
logilab-common==0.63.2
pylint==1.4.3
six==1.9.0
wsgiref==0.1.2

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• Bitbucket: https://bitbucket.org/logilab/pylint/issue/500

[pylint-bot]

Original comment by Claudiu Popa (BitBucket: PCManticore, GitHub: @PCManticore):

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Thanks for the report and sorry for the delay.

Using the latest astroid tip https://bitbucket.org/logilab/astroid/commits/e907876a292f4ee009d65505e610dbc8c7956e30, the output now looks like this:

#!python

C:  3, 0: Final newline missing (missing-final-newline)
C:  1, 0: Missing module docstring (missing-docstring)
E:  1, 0: Unable to import 'mock' (import-error)

I'll update the import-error message to show that's in fact '.mock'.