[issue30873] `SystemError: <built-in function create_builtin> returned NULL without setting an error` from importing _pickle

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

I get the following error on 3.7:

$ ./python issue30873.py 
Traceback (most recent call last):
  File "issue30873.py", line 44, in <module>
    exec("import _pickle", dct)
  File "<string>", line 1, in <module>
  File "/home/serhiy/py/cpython/Lib/importlib/_bootstrap.py", line 1059, in __import__
    module = _gcd_import(name)
  File "/home/serhiy/py/cpython/Lib/importlib/_bootstrap.py", line 986, in _gcd_import
    return _find_and_load(name, _gcd_import)
  File "/home/serhiy/py/cpython/Lib/importlib/_bootstrap.py", line 963, in _find_and_load
    return _find_and_load_unlocked(name, import_)
  File "/home/serhiy/py/cpython/Lib/importlib/_bootstrap.py", line 948, in _find_and_load_unlocked
    raise ModuleNotFoundError(_ERR_MSG.format(name), name=name)
ModuleNotFoundError: No module named '_pickle'

On 3.6:

$ ./python issue30873.py 
Traceback (most recent call last):
  File "issue30873.py", line 44, in <module>
    exec("import _pickle", dct)
  File "<string>", line 1, in <module>
  File "/home/serhiy/py/cpython3.6/Lib/importlib/_bootstrap.py", line 1059, in __import__
    module = _gcd_import(name)
  File "/home/serhiy/py/cpython3.6/Lib/importlib/_bootstrap.py", line 986, in _gcd_import
    return _find_and_load(name, _gcd_import)
  File "/home/serhiy/py/cpython3.6/Lib/importlib/_bootstrap.py", line 963, in _find_and_load
    return _find_and_load_unlocked(name, import_)
  File "/home/serhiy/py/cpython3.6/Lib/importlib/_bootstrap.py", line 950, in _find_and_load_unlocked
    module = _load_unlocked(spec)
  File "/home/serhiy/py/cpython3.6/Lib/importlib/_bootstrap.py", line 648, in _load_unlocked
    module = module_from_spec(spec)
  File "/home/serhiy/py/cpython3.6/Lib/importlib/_bootstrap.py", line 560, in module_from_spec
    module = spec.loader.create_module(spec)
  File "<frozen importlib._bootstrap_external>", line 922, in create_module
  File "/home/serhiy/py/cpython3.6/Lib/importlib/_bootstrap.py", line 205, in _call_with_frames_removed
    return f(*args, **kwds)
KeyError: 'copyreg'

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30873>
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