Python 3.8: error: unrecognized arguments: -rs

[hugovk]

• a detailed description of the bug or suggestion
• output of pip list from the virtual environment you are using
• pytest and operating system versions
• minimal example if possible

• pytest 5.0.0
• Ubuntu 16.04.6 LTS Xenial

pytest -rs errors on on Travis CI with Python 3.8-dev and nightly (both currently Python 3.8.0b1+).

Python 2.7, 3.5-3.7, PyPy and PyPy3 work as expected.

• https://travis-ci.org/hugovk/test/builds/553157200
• https://github.com/hugovk/test/tree/pytest-rs

pytest --help on -rs:

  -r chars              show extra test summary info as specified by chars:
                        (f)ailed, (E)rror, (s)kipped, (x)failed, (X)passed,
                        (p)assed, (P)assed with output, (a)ll except passed
                        (p/P), or (A)ll. (w)arnings are enabled by default
                        (see --disable-warnings).

It doesn't really matter what's in the test file:

#!/usr/bin/env python
import pytest

def test_ok():
    assert True

@pytest.mark.skip(reason="skip it")
def test_skip():
    assert False

Run it with -rs on Python 3.7:

$ pytest -rs test.py
============================= test session starts ==============================
platform linux -- Python 3.7.1, pytest-5.0.0, py-1.7.0, pluggy-0.12.0
rootdir: /home/travis/build/hugovk/test
collected 2 items
test.py .s                                                               [100%]
=========================== short test summary info ============================
SKIPPED [1] test.py:9: skip it
===================== 1 passed, 1 skipped in 0.02 seconds ======================
The command "pytest -rs test.py" exited with 0.

But errors on Python 3.8:

$ pytest -rs test.py
ERROR: usage: pytest [options] [file_or_dir] [file_or_dir] [...]
pytest: error: unrecognized arguments: -rs
  inifile: None
  rootdir: /home/travis/build/hugovk/test
The command "pytest -rs test.py" exited with 4.

Python 3.7:

$ pip list
Package            Version   
------------------ ----------
atomicwrites       1.2.1     
attrs              18.2.0    
certifi            2018.11.29
importlib-metadata 0.18      
mock               2.0.0     
more-itertools     4.3.0     
nose               1.3.7     
numpy              1.15.4    
packaging          19.0      
pbr                5.1.1     
pip                19.0.3    
pipenv             2018.11.26
pluggy             0.12.0    
py                 1.7.0     
pyparsing          2.4.0     
pytest             5.0.0     
setuptools         40.8.0    
six                1.11.0    
virtualenv         16.1.0    
virtualenv-clone   0.4.0     
wcwidth            0.1.7     
wheel              0.33.1    
zipp               0.5.1     

Python 3.8-dev:

$ pip list
Package            Version            
------------------ -------------------
atomicwrites       1.3.0              
attrs              19.1.0             
certifi            2019.6.16          
Cython             0.29.11            
importlib-metadata 0.18               
mock               3.0.5              
more-itertools     7.1.0              
nose               1.3.7              
numpy              1.18.0.dev0+b4105bf
packaging          19.0               
pip                19.1.1             
pipenv             2018.11.26         
pluggy             0.12.0             
py                 1.8.0              
pyparsing          2.4.0              
pytest             5.0.0              
pytz               2019.1             
setuptools         41.0.1             
six                1.12.0             
virtualenv         16.6.1             
virtualenv-clone   0.5.3              
wcwidth            0.1.7              
wheel              0.33.4             
zipp               0.5.1              

[hugovk]

Aha, just found this is a duplicate of the already fixed #5523 :)

And a workaround in the meantime:

-  - pytest -rs test.py
+  - pytest -r s test.py

https://travis-ci.org/hugovk/test/builds/553161541

Thanks!

[RonnyPfannschmidt]

@hugovk you missed the - before the s

[hugovk]

The s is an option for the -r:

$ pytest -r -s test.py
ERROR: usage: pytest.py [options] [file_or_dir] [file_or_dir] [...]
pytest.py: error: argument -r: expected one argument

$ pytest -r s test.py
======================================================= test session starts =======================================================
platform darwin -- Python 3.7.3, pytest-5.0.0, py-1.5.4, pluggy-0.12.0
Test order randomisation NOT enabled. Enable with --random-order or --random-order-bucket=<bucket_type>
rootdir: /Users/hugo/github/test, inifile: setup.cfg
plugins: xdist-1.29.0, parallel-0.0.9, random-order-1.0.4, flaky-3.5.3, black-0.3.5, timeout-1.3.3, rerunfailures-6.0, cov-2.7.1, forked-1.0.1, requests-mock-1.6.0
collected 2 items

test.py .s                                                                                                                  [100%]
===Flaky Test Report===


===End Flaky Test Report===

===================================================== short test summary info =====================================================
SKIPPED [1] test.py:9: skip it
=============================================== 1 passed, 1 skipped in 0.05 seconds ===============================================

$ pytest -rs test.py # This doesn't work on 3.8 (yet)
======================================================= test session starts =======================================================
platform darwin -- Python 3.7.3, pytest-5.0.0, py-1.5.4, pluggy-0.12.0
Test order randomisation NOT enabled. Enable with --random-order or --random-order-bucket=<bucket_type>
rootdir: /Users/hugo/github/test, inifile: setup.cfg
plugins: xdist-1.29.0, parallel-0.0.9, random-order-1.0.4, flaky-3.5.3, black-0.3.5, timeout-1.3.3, rerunfailures-6.0, cov-2.7.1, forked-1.0.1, requests-mock-1.6.0
collected 2 items

test.py .s                                                                                                                  [100%]
===Flaky Test Report===


===End Flaky Test Report===

===================================================== short test summary info =====================================================
SKIPPED [1] test.py:9: skip it
=============================================== 1 passed, 1 skipped in 0.04 seconds ==============================================

[RonnyPfannschmidt]

sorry, my mistake, i missed that the option was -r