How to do from module import * using importlib? [d

问题:

This question already has answers here:

Dynamically importing Python modules (4 answers)

What is the function form of star import in Python 3 (1 answer)

Closed 3 years ago.

I would like to accomplish the same result as from module import * using importlib.

This question Importing module with a local name using importlib describes how to do import module as mod, which is related but not the same.

回答1:

To emulate from X import * you must import the module and then merge the appropriate names into the global namespace.

# get a handle on the module
mdl = importlib.import_module('X')

# is there an __all__?  if so respect it
if "__all__" in mdl.__dict__:
    names = mdl.__dict__["__all__"]
else:
    # otherwise we import all names that don't begin with _
    names = [x for x in mdl.__dict__ if not x.startswith("_")]

# now drag them in
globals().update({k: getattr(mdl, k) for k in names})