Tutorial 4.8 call by value vs reference is confusing

Documentation

The part about how arguments are passed in Section 4.8 (by value vs by reference) is written in a confusing way and there is even a footnote admitting to it

IMO an improvement would be along the lines:
Arguments are always passed using call by value. For objects that are passed this value consists of a reference to that object. Which means that mutations to the object are visible outside, reassignments of another reference to the variable inside the function are not. insert example

Linked PRs

• gh-148563

docs.python.org/3/tutorial/controlflow.html#defining-functions にある Python チュートリアルのセクション 4.8 を脚注も含めて読み、リンクされた PR gh-148563 を確認してください。完了条件は、値渡しと参照渡しの説明がより明確になり、変更と再代入の違いを示す例が含まれていることです。