New submission from mental <m3n...@yahoo.com>:
Hi folks! (apologies in advance if any of the code blocks come out irregular,
this is my first issue)
I was just exploring the `Lib` modules out of curiosity and I discovered
`pyclbr` a peculiar artifact from the older days of the Python standard library.
I noticed the module could be run directly and after attempting to run it
withan invalid source target `python -m pyclbr somenonexistentfile` it raised
```
Traceback (most recent call last):
File "/usr/lib/python3.7/runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "/usr/lib/python3.7/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/usr/lib/python3.7/pyclbr.py", line 405, in <module>
_main()
File "/usr/lib/python3.7/pyclbr.py", line 380, in _main
tree = readmodule_ex(mod, path)
File "/usr/lib/python3.7/pyclbr.py", line 116, in readmodule_ex
return _readmodule(module, path or [])
File "/usr/lib/python3.7/pyclbr.py", line 169, in _readmodule
if spec.submodule_search_locations is not None:
AttributeError: 'NoneType' object has no attribute
'submodule_search_locations'```
I was running 3.7.2, although I assume this affects future versions and
possibly some older versions. (I suspect the bug originates from importlib
silently breaking backwards compatability)
I thought it strange for a script to exit so loudly so after reading through
the source I believe the intended behavior meant for an invalid target is to
raise an `ImportError` although I admit I'm not convinced this is still the
best way to exit from erroneous input (or even if the module is still relevant
in todays code?)
I believe this is a bug (but I would very much appreciate a second opinion) and
I've identified it as a low priority easy fix, In which case I'd be more than
happy to submit a fix :)
----------
messages: 337966
nosy: mental
priority: normal
severity: normal
status: open
title: Lib/pyclbr.py crashes when the package spec cannot be determined by
importlib
type: crash
versions: Python 3.7
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue36298>
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