Thomas Grainger <tagr...@gmail.com> added the comment:

hello, just chiming in to let you know that this broke CI on twisted: 
https://github.com/twisted/twisted/pull/1628/ (As above for Chalice, I think 
this didn't actually break the framework itself, just the tests for the 
framework. )

do you know what the correct usage of importlib.util.spec_from_file_location is 
to match importlib.import_module ?


I have a tree like this:

.
└── mypkg
    ├── demo.py
    ├── __init__.py
    └── __pycache__
        ├── __init__.cpython-38.pyc
        └── __init__.cpython-39.pyc

2 directories, 4 files


but I'm not sure how to get a spec for ./mypkg/demo.py:


Python 3.9.6 (default, Jul  3 2021, 16:40:50) 
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', '/usr/lib/python39.zip', '/usr/lib/python3.9', 
'/usr/lib/python3.9/lib-dynload', '/usr/local/lib/python3.9/dist-packages', 
'/usr/lib/python3/dist-packages']
>>> import os
>>> os.getcwd()
'/home/graingert/projects/syspath-tests'
>>> import importlib.util
>>> importlib.util.spec_from_file_location(name="mypkg.demo", 
>>> location="mypkg/demo.py")
ModuleSpec(name='mypkg.demo', 
loader=<_frozen_importlib_external.SourceFileLoader object at 0x7fc94644bfd0>, 
origin='mypkg/demo.py')
>>> import mypkg.demo
>>> mypkg.demo.__spec__
ModuleSpec(name='mypkg.demo', 
loader=<_frozen_importlib_external.SourceFileLoader object at 0x7fc94645a160>, 
origin='/home/graingert/projects/syspath-tests/mypkg/demo.py')
>>>

----------
nosy: +graingert

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<https://bugs.python.org/issue44070>
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