如何將 Nonetype 轉換為 int 或 string?

我有一個 Nonetypex,它通常是一個數字,但也可以是 None。我想將它除以一個數字,但 Python 會引發:

TypeError: int() argument must be a string or a number, not "NoneType " 

我該如何解決這個問題?

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