「intは値を変えられるのに、なぜイミュータブル（immutable）なのか？」というのは、Python初心者がつまずきやすいポイントのひとつです。 ここでちょっと脳内会話劇、やってみましょうか。 🧠脳内会話劇：「intくん、君はイミュータブルらしいぞ？

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Mypy can check more than simple Python types. In my last article, I introduced Mypy, a package that enforces type checking in Python programs. Python itself is, and always will remain, a dynamically ...

Python is best thought of as a dynamic but strongly typed language. Types aren’t associated with the names of things, but with the things themselves. This makes Python flexible and convenient for ...