问题描述
假设我有以下结构：
app/
__init__.py
foo/
a.py
b.py
c.py
__init__.py
a.py，b.py和c.py共享一些常见的导入（logging，os，re等）。是否可以从 __ init __。py 文件中导入这三个或四个常用模块，这样我就不必在每个文件中导入它们了？
a.py, b.py and c.py share some common imports (logging, os, re, etc). Is it possible to import these three or four common modules from the __init__.py file so I don't have to import them in every one of the files?
编辑：我的目标是避免在每个文件中导入5-6个模块，这与性能原因无关。
My goal is to avoid having to import 5-6 modules in each file and it's not related to performance reasons.
推荐答案
不，它们必须放在每个模块的命名空间中，所以你必须以某种方式导入它们（除非你传递记录为一个函数参数，这可能是一种奇怪的做事方式，至少可以说。）
No, they have to be put in each module's namespace, so you have to import them somehow (unless you pass logging around as a function argument, which would be a weird way to do things, to say the least).
但是模块只导入一次（然后放入 a ， b ， c 名称空间），所以不要担心使用太多内存或类似内容。
But the modules are only imported once anyway (and then put into the a, b, and c namespaces), so don't worry about using too much memory or something like that.
您当然可以将它们放入一个单独的模块中并将 导入每个 a ， b ， c ，但这个单独的模块会仍然需要进口ime。
You can of course put them into a separate module and import that into each a, b, and c, but this separate module would still have to be imported everytime.
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