wrong error message when inspect getfile a custom module

[yihong0618]

Bug report

Bug description:

>>> import inspect
>>> import types
... custom_module = types.ModuleType('my_custom_module')
... 
>>> inspect.getfile(custom_module)
Traceback (most recent call last):
  File "<python-input-2>", line 1, in <module>
    inspect.getfile(custom_module)
    ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/Users/yihong/repos/cpython/Lib/inspect.py", line 822, in getfile
    raise TypeError('{!r} is a built-in module'.format(object))
TypeError: <module 'my_custom_module'> is a built-in module

as the code it is a costom module but not a build-in module
the error message is wrong

CPython versions tested on:

CPython main branch

Operating systems tested on:

Other

Linked PRs

• gh-138542: error message is wrong when inspect a custom module #138543

[terryjreedy]

relevant code

    if ismodule(object):
        if getattr(object, '__file__', None):
            return object.__file__
        raise TypeError('{!r} is a built-in module'.format(object))

Here is another and possibly more comman way to get a similar message in REPL or IDLE Shell.

>>> import __main__ as m
>>> import inspect
>>> inspect.getfile(m)
Traceback (most recent call last):
  File "<pyshell#7>", line 1, in <module>
    inspect.getfile(m)
  File "C:\Programs\Python314\Lib\inspect.py", line 822, in getfile
    raise TypeError('{!r} is a built-in module'.format(object))
TypeError: <module '__main__' (<class '_frozen_importlib.BuiltinImporter'>)> is a built-in module

Solution: add "or other no-file module" or "or an instance of one. I prefer the second.

[yihong0618]

relevant code

    if ismodule(object):
        if getattr(object, '__file__', None):
            return object.__file__
        raise TypeError('{!r} is a built-in module'.format(object))

Here is another and possibly more comman way to get a similar message in REPL or IDLE Shell.

>>> import __main__ as m
>>> import inspect
>>> inspect.getfile(m)
Traceback (most recent call last):
  File "<pyshell#7>", line 1, in <module>
    inspect.getfile(m)
  File "C:\Programs\Python314\Lib\inspect.py", line 822, in getfile
    raise TypeError('{!r} is a built-in module'.format(object))
TypeError: <module '__main__' (<class '_frozen_importlib.BuiltinImporter'>)> is a built-in module

Solution: add "or other no-file module" or "or an instance of one. I prefer the second.

thank you I check the code seems there's no a perfect way to solve this, because
user can add all the __spec__ and others to it.
so I just check if there is a __spec__ in it as the solution