Environment

• Pythonnet version: 2.5.1
• Python version: 3.7.9
• Operating System: Windows 10

Details

• Describe what you were trying to get done.

pythonnet overwrites the python's __import__ routine, but does not implement python's signature precisely:
original python's signature is

__import__(name, globals=None, locals=None, fromlist=(), level=0)

Most other python modules call the name parameter as positional: __import__("foo", ...

Some packages (e.g. kivy) use __import__ as

    __import__(
        name='{2}.{0}.{1}'.format(basemodule, modulename, base),
        globals=globals(), locals=locals(), fromlist=[modulename], level=0
    )

i.e. the name argument used as keyword argument in the call. Both calls are valid in python's __import__, but fail at the overwritten __import__ with

TypeError: __import__() takes at least 1 argument (0 given)

A hotfix is to alter the other modules code to

    __import__(
        '{2}.{0}.{1}'.format(basemodule, modulename, base),
        globals=globals(), locals=locals(), fromlist=[modulename], level=0
    )

but the broken code is within pythonnet.