The ``simplifiable-if-expression`` message description should not only mention ``bool(test)``

[LefterisJP]

Bug description

Here is a simple example

"""Simplifiable if expression false positive"""

TEST_VAR1 = True
TEST_VAR2 = 'True'
A = True if TEST_VAR1 is True else False
B = True if TEST_VAR2 == 'True' else False

Configuration

No response

Command used

pylint test.py

Pylint output

************* Module test2
test2.py:5:4: R1719: The if expression can be replaced with 'test' (simplifiable-if-expression)
test2.py:6:4: R1719: The if expression can be replaced with 'test' (simplifiable-if-expression)

Expected behavior

I would only expect the first simplifiable-if-expression warning for A.

For B simplifying it would not work since it's comparing against the string True and eventually the string False and bool(string) is always True

Pylint version

pylint 2.12.2
astroid 2.9.0
Python 3.9.10 (main, Feb  3 2022, 16:04:33) 
[GCC 11.1.0]

OS / Environment

Linux 5.16.12-arch1-1 #1 SMP PREEMPT Wed, 02 Mar 2022 12:22:51 +0000 x86_64 GNU/Linux

Additional dependencies

No response

[DanielNoord]

@LefterisJP Can't you write:

B = TEST_VAR2 == 'True'

[LefterisJP]

@LefterisJP Can't you write:

B = TEST_VAR2 == 'True'

yes indeed, but what I understood for simplifiable-if-expression was telling me to use bool(): https://vald-phoenix.github.io/pylint-errors/plerr/errors/refactoring/R1719.html

Perhaps I misunderstood the error then?

[DanielNoord]

Ah, it seems like that information is incorrect. We should update the description of that message.
I'll change the issue title to reflect this. Thanks for telling us about this!

Btw: That project (although helpful) is not the "official" pylint documentation. The official documentation can be found here: https://pylint.pycqa.org/en/latest/messages/refactor/simplifiable-if-expression.html.
We have been working on integrating that project and the code examples into our own documentation, see #5527