False positive on gethostname in socket module

[dalemyers]

Steps to reproduce

Create a simple file (or use this zipped example socket_test.zip):

"""Test module."""

import socket

print(socket.gethostname())

Install pylint (you can use the following requirements.txt file to get the latest, or install the pre-release version):

astroid==2.5.2
isort==5.8.0
lazy-object-proxy==1.6.0
mccabe==0.6.1
pylint==2.7.4
toml==0.10.2
wrapt==1.12.1

Run pylint test.py on it.

Current behavior

************* Module test
test.py:5:6: E1101: Module 'socket' has no 'gethostname' member (no-member)

----------------------------------------------------------------------
Your code has been rated at -15.00/10 (previous run: -15.00/10, +0.00)

Expected behavior

No issues will be found

pylint --version output

Result of pylint --version output:

pylint 3.0.0a1
astroid 2.5.2
Python 3.9.2 (default, Mar 26 2021, 23:22:38)
[Clang 12.0.0 (clang-1200.0.32.29)]

or

pylint 2.7.4
astroid 2.5.2
Python 3.9.2 (default, Mar 26 2021, 23:22:38)
[Clang 12.0.0 (clang-1200.0.32.29)]

Both repro.

Note: Running this on macOS Big Sur

[hippo91]

@dalemyers thanks for your report. I do not understand clearly what is the problem here as the Current behavior section is empty.
However when linting the snippet you gave, pylintdoesn't complain about anything.

[dalemyers]

Updated the current behavior section (I'd accidentally pasted my output in the HTML comment in the template).

Everyone on my team is seeing this same behavior.

Here are the exact steps I took to reproduce on a brand new machine (only took it out of the box yesterday):

1. Create a new folder somewhere called whatever you like
2. Create a new python file inside that called "test.py" (this can really be whatever you like as well)
3. Set the content of that to the example shown above
4. Create a new virtual environment python3 -m venv venv
5. Activate the virtual environment source venv/bin/activate
6. Install pylint python3 -m pip install pylint
7. Run pylint python3 -m pylint test.py

Python 3.9.4 in this case (repro above was 3.9.2).

[ravisumit33]

I also can reproduce this issue.
@dalemyers I am facing similar issue #4592 . Can you also reproduce it?

Is it common on Mac OS ?