Interrupted: 1 error during collection, SystemExit: 0

Package      Version
------------ -------
atomicwrites 1.4.0
attrs        21.4.0
colorama     0.4.4
iniconfig    1.1.1
packaging    21.3
pip          21.2.3
pluggy       1.0.0
py           1.11.0
pyparsing    3.0.8
pytest       7.1.1
setuptools   57.4.0
tomli        2.0.1

Call python test.py (https://docs.pytest.org/en/7.1.x/how-to/usage.html#calling-pytest-from-python-code)

def test_percent():
    pass

import pytest,sys
pytest.main([sys.argv[0], '-vvv',])
exit(0)

Output:

========================================================================== test session starts ===========================================================================
platform win32 -- Python 3.9.7, pytest-7.1.1, pluggy-1.0.0 -- C:\Python\python.exe
cachedir: .pytest_cache
rootdir: C:\Python
collected 0 items / 1 error

================================================================================= ERRORS =================================================================================
_____________________________________________________________________ ERROR collecting test session ______________________________________________________________________
d:\test.py:6: in <module>
    exit(0)
lib\_sitebuiltins.py:26: in __call__
    raise SystemExit(code)
E   SystemExit: 0
---------------------------------------------------------------------------- Captured stdout -----------------------------------------------------------------------------
============================= test session starts =============================
platform win32 -- Python 3.9.7, pytest-7.1.1, pluggy-1.0.0 -- C:\Python\python.exe
cachedir: .pytest_cache
rootdir: C:\Python
collecting ... collected 1 item

::test_percent <- d:\test.py PASSED                       [100%]

============================== 1 passed in 0.01s ==============================
======================================================================== short test summary info =========================================================================
ERROR  - SystemExit: 0
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
============================================================================ 1 error in 0.29s ============================================================================

Code on Lib/_sitebuiltins.py:

 1: """
 2: The objects used by the site module to add custom builtins.
 3: """
 4: 
 5: # Those objects are almost immortal and they keep a reference to their module
 6: # globals.  Defining them in the site module would keep too many references
 7: # alive.
 8: # Note this means this module should also avoid keep things alive in its
 9: # globals.
10: 
11: import sys
12: 
13: class Quitter(object):
14:     def __init__(self, name, eof):
15:         self.name = name
16:         self.eof = eof
17:     def __repr__(self):
18:         return 'Use %s() or %s to exit' % (self.name, self.eof)
19:     def __call__(self, code=None):
20:         # Shells like IDLE catch the SystemExit, but listen when their
21:         # stdin wrapper is closed.
22:         try:
23:             sys.stdin.close()
24:         except:
25:             pass
26:         raise SystemExit(code)

Related: https://github.com/pytest-dev/pytest/issues/8986 warn when the cmdline_main hook raises systemexit

[Lil-BigBoy]

Not sure that makes 100% sense. Example codes are made to be deviated from. Otherwise you would just be coding the example. Explanations for beginners should be totally concise and make it clear what is needed in the snippet. I’ve seen so many examples online that muddy the water with unnecessary stuff and as a newbie it can be tiring to fathom out what is relevant.

[RonnyPfannschmidt]

All learning and training starts with replication and the divergence happens as skill and understanding grows,

Going straight to divergence without understanding or a experimental base for exploration is a bit like a fresh Mason putting bricks in weird angles for giggles

It’s all to easy to end up with a train wreck because something was missed