TypeError: unsupported operand type(s) for /: 'NoneType' and 'float'

引用\[2\]中的代码是一个计算阶乘的函数，但是在原始代码中，if语句块没有返回值，导致函数返回了None。这可能导致在计算阶乘时出现错误。为了修正这个问题，我们需要在if语句块中添加一个返回语句。修正后的代码如下：

def factorial(n):
    """计算阶乘"""
    if n != 1:
        n = n * factorial(n - 1)
        return n
    else:
        return n

print(factorial(3))

这样修正后，函数将正确计算阶乘，并返回结果。
#### 引用[.reference_title]
- *1* [解决报错TypeError：unsupported operand type(s) for +: ‘NoneType‘ and ‘str](https://blog.csdn.net/qq_35812205/article/details/126077463)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
- *2* *3* [Python错误: TypeError: unsupported operand type(s) for *: ‘int‘ and ‘NoneType](https://blog.csdn.net/qq_45816346/article/details/122718132)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
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