False positive undefined-variable

[sam-s]

Steps to reproduce

import collections

l = ["a","b","c"]

class Foo(collections.namedtuple("Foo",[x+"_foo" for x in l])):
    pass

Current behavior

error (E0602, undefined-variable, Foo) Undefined variable 'x'

for the class Foo line

Expected behavior

no diagnostics - the code works fine

pylint --version output

pylint 2.4.4
astroid 2.3.3
Python 3.7.6 (default, Dec 30 2019, 19:38:28) 
[Clang 11.0.0 (clang-1100.0.33.16)]

[Pierre-Sassoulas]

Fixed in #3713