如何在 Python 中进行多次导入? [英] How to do multiple imports in Python?

问题描述

在 Ruby 中，我没有多次重复要求"(Python 中的导入")词，而是重复

In Ruby, instead of repeating the "require" (the "import" in Python) word lots of times, I do

%w{lib1 lib2 lib3 lib4 lib5}.each { |x| require x }

因此它遍历libs"和require"(导入)集合中的每一个.现在我正在编写一个 Python 脚本，我想做类似的事情.有没有办法，或者我需要为所有这些编写导入".

So it iterates over the set of "libs" and "require" (import) each one of them. Now I'm writing a Python script and I would like to do something like that. Is there a way to, or do I need to write "import" for all of them.

直接的推导"类似于以下代码.无论如何，由于 Python 不导入以字符串命名的库，因此它不起作用.

The straight-forward "traduction" would be something like the following code. Anyway, since Python does not import libs named as strings, it does not work.

requirements = [lib1, lib2, lib3, lib4, lib5]
for lib in requirements:
    import lib

提前致谢

推荐答案

对于已知模块，用逗号隔开:

For known module, just separate them by commas:

import lib1, lib2, lib3, lib4, lib5

如果你真的需要基于动态变量以编程方式导入，你的 ruby​​ 的直译是:

If you really need to programmatically import based on dynamic variables, a literal translation of your ruby would be:

modnames = "lib1 lib2 lib3 lib4 lib5".split()
for lib in modnames:
    globals()[lib] = __import__(lib)

尽管在您的示例中不需要这样做.

Though there's no need for this in your example.

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