using-assignment-expression-in-unsupported-version / W2605

Message emitted:

Assignment expression is not supported by all versions included in the py-version setting

Description:

Used when the py-version set by the user is lower than 3.8 and pylint encounters an assignment expression (walrus) operator.

Problematic code:

import random

# +1: [using-assignment-expression-in-unsupported-version]
if zero_or_one := random.randint(0, 1):
    assert zero_or_one == 1

Correct code:

import random

zero_or_one = random.randint(0, 1)
if zero_or_one:
    assert zero_or_one == 1

Configuration file:

[main]
py-version=3.7

Additional details:

The assignment expression (walrus) operator (:=) was introduced in Python 3.8; to use it, please use a more recent version of Python.

Created by the unsupported_version checker.