False positive used-before-assignment with inline if

[Zeckie]

Bug description

str(foo if (foo := "BAR") else "").lower()

Pylint gives error: foobar.py:1:4: E0601: Using variable 'foo' before assignment (used-before-assignment)

When run in python:

>>> str(foo if (foo := "BAR") else "").lower()
'bar'

Configuration

No response

Command used

pylint foobar.py

Pylint output

************* Module foobar
foobar.py:1:4: E0601: Using variable 'foo' before assignment (used-before-assignment)

Expected behavior

No errors

Pylint version

pylint 2.15.5
astroid 2.12.12
Python 3.10.6 (tags/v3.10.6:9c7b4bd, Aug  1 2022, 21:53:49) [MSC v.1932 64 bit (AMD64)]

OS / Environment

Windows

Additional dependencies

No response

[nickdrozd]

Variations that don't raise the error:

# reverse if / else values
str("" if (foo := "BAR") else foo).lower()

# drop .lower()
str(foo if (foo := "BAR") else "")

# simple assignment
var = foo if (foo := "BAR") else ""