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This article mainly shows you "python how to control imported content", the content is easy to understand, clear, hope to help you solve doubts, the following let the editor lead you to study and learn "python how to control imported content" this article.

Control what is imported

Some languages provide an explicit mechanism for exporting members (variables, methods, interfaces), such as Golang, which exports only members that begin with uppercase letters. But in Python, all objects are exported unless we use _ _ all__:

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

In the above code snippet, only the bar function is exported. In addition, if the value of _ _ all__ is empty, no functions are exported and AttributeError is reported when the module is imported.

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