importlib

importlib.reload(modulename)

os

sys

sys.exc_info()

traceback

traceback.format_exception(sys.exc_info())

shutil

glob

zip

json

hashlib

re

datetime

logging

math

urllib

timeit

doctest

unitest

weakref

collections

importlib

# scrapy.utils.misc.load_object
mod = import_module(module)
obj = getattr(mod, name)
# 也可以同inspect使用

inspect

inspect.ismodule