Python 動態加載模組小記錄

在做實驗性的玩具.遇上了這個問題.
英文好像是 Dynamic Import Module?.
不過加載是否成功.對應的位置很重要.
筆記一下

大約結構如下:

app/socials/__init__.py
app/socials/provider/__init__.py
app/socials/provider/facebook.py

在 app/socials/init.py 內容為:

# 應用 provider = import_provider('facebook')
def import_provider(name):
	module = __import__("provider.{0}".format(name), globals(), locals(), [str(name)])
	return getattr(module, name.capitalize())

# 簡化一下
import_provider = lambda name: getattr(__import__("provider.{0}".format(name), globals(), locals(), [str(name)]), name.capitalize())

# 找出源碼位置直接加載進來
def import_provider(name):
	socials_root    = dirname(abspath(__file__))
	provider_root   = join(socials_root, 'provider')
	provider_source = join(provider_root, name + '.py')
	provider_module = load_module(
		# convert path sep from "/" to "."
		splitext(provider_source)[0].replace(sep, '.'),
		*find_module(name, [provider_root])
	)
	return getattr(provider_module, name.capitalize())