I want to import another Python file in the same folder, for example a.py with contents:

from ..b import b
...

I always meet ImportError: attempted relative import with no known parent package. When I try to import it with m = importlib.import_module('a', '.') , I also try importlib.util stuff, and it doesn’t work either.

Replacing with from . import a as m at the same place works, but I want to import it according to the input string, so it leads to this problem.

The only way I found is:

md = {'__name__': globals()['__name__']}
exec('from . import a as m', md)
a = md['m']

uUimport statement and calling importlib function?