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I was reading a document and I encountered the part below:

A ​module​ is nothing more, nothingless than a directory with ​__init__.py​ file inside. It should contain other Python files with the logic related to the module's purpose.

Is this definition correct?

(As I know, a Python module is a file, whose extension is py, which contains Python code. And as I remember a directory which contains dunder init(init.py) file is called as Python package.)