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How Python controls the import operation

2025-06-16 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >

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This article mainly introduces how to control the import operation of Python, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

Controls what can / cannot be imported

Some languages have a very obvious mechanism for exporting members (variables, methods, interfaces). For example, in Golang, only members that begin with uppercase letters are exported. However, in Python, all members are exported (unless we use "all"):

Def foo (): pass def bar (): pass _ _ all__ = ["bar"]

In the above code, we know that only the "bar" function has been exported. Similarly, we can leave "all" empty so that nothing is exported, resulting in a "AttributeError" when imported from this module.

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