Do not suggest augmented assigns for non-commutative operations with the target as the right operand

[bchardin]

Bug description

Pylint suggests augmented assigns for non-commutative binary operations, even when the assignment target is the right operand.

"""Minimal example where a C0210 message is displayed even though a simple
transformation does not seem possible.
"""

# pylint: disable=invalid-name

x = 1
x = 1 - x
x = 2 / x

Configuration

No response

Command used

pylint c0210_issue.py

Pylint output

************* Module c0210_issue
c0210_issue.py:8:0: C0210: Use '-=' to do an augmented assign directly (consider-using-augmented-assign)
c0210_issue.py:9:0: C0210: Use '/=' to do an augmented assign directly (consider-using-augmented-assign)

------------------------------------------------------------------
Your code has been rated at 3.33/10 (previous run: 3.33/10, +0.00)

Expected behavior

No error should be displayed.

Pylint version

pylint 2.16.0-dev
astroid 2.12.10
Python 3.8.5 (default, Sep  7 2020, 16:44:59) [GCC 6.3.0 20170516]

OS / Environment

Debian 9.13 (stretch)

Additional dependencies

No response

[bchardin]

This is linked to a feature (to be) introduced with the 2.16 version by #7514.

[Pierre-Sassoulas]

Awesome bug report, thank you for beta-testing pylint 👌 @clavedeluna @DanielNoord do you want to handle this considering you implemented #7514 together ?

[DanielNoord]

I think we should just disable the checker for anything where the assignee is not in the left hand side of the equation. I thought I found all cases where it can be on the right, but clearly I didn't have my maths correctly 😓

I don't know if I have much time to prepare a PR but I can definitely help with review!