Python:从文件夹导入每个模块? [英] Python: import every module from a folder?
问题描述
告诉Python从某个文件夹导入所有模块的最佳方式(读取:最干净)是什么?
What would be the best (read: cleanest) way to tell Python to import all modules from some folder?
我想让人们把他们的mods (模块)在我的应用程序的一个文件夹中,我的代码应该在每次启动时检查并导入放在那里的任何模块。
I want to allow people to put their "mods" (modules) in a folder in my app which my code should check on each startup and import any module put there.
我也不希望添加额外的范围导入的东西(不是myfolder.mymodule.something,而是东西)
I also don't want an extra scope added to the imported stuff (not "myfolder.mymodule.something", but "something")
推荐答案
如果转换文件夹本身一个模块,通过使用 __ init __。py
文件并使用< foldername>中的 import *
适合您,您可以使用os.listdir或glob.glob遍历文件夹内容
,并使用<$导入以.py结尾的每个文件c $ c> __ import __ 内置函数:
If transforming the folder itself in a module, through the use of a __init__.py
file and using from <foldername> import *
suits you, you can iterate over the folder contents
with "os.listdir" or "glob.glob", and import each file ending in ".py" with the __import__
built-in function:
import os
for name in os.listdir("plugins"):
if name.endswith(".py"):
#strip the extension
module = name[:-3]
# set the module name in the current global name space:
globals()[module] = __import__(os.path.join("plugins", name)
这种方法的好处是:它允许你动态地将模块名称传递给 __ import __
- 而mpmport语句需要对模块名称进行硬编码,它允许您在导入之前检查文件的其他内容 - 可能是大小,还是导入某些必需的模块。
The benefit of this approach is: it allows you to dynamically pass the module names to __import__
- while the ìmport statement needs the module names to be hardcoded, and it allows you to check other things about the files - maybe size, or if they import certain required modules, before importing them.
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