import sys, types
def add_fakeimport(name: str, code: str):
    module = types.ModuleType(name)
    parent = '.'.join(name.split('.')[:-1]) if '.'.join(name.split('.')[:-1]) else name
    if not parent == name and parent not in sys.modules:
        sys.modules[parent] = types.ModuleType(parent)
    globals = {'__package__': parent}
    print(globals)
    module.__dict__.update(globals)
    exec(code, module.__dict__)
    sys.modules[name] = module

add_fakeimport('abcxyzaa.b', 'print("hi"); a = lambda: print("hi")')
add_fakeimport('abcxyzaa', 'from . import b; print("hi"); a = lambda: print("hi")')
import abcxyzaa as aa
aa.b.a()