raise 异常

https://blog.csdn.net/fengbingchun/article/details/119818521

raise [EXPRESSION [from EXPRESSION]]

raise Exception("var's value:{}".format(var))

def functionName( level ):
    if level < 1:
        raise Exception("Invalid level!", level)
        # 触发异常后，后面的代码就不会再执行
functionName(0)

---------------------------------------------------------------------------
Exception                                 Traceback (most recent call last)
Cell In[9], line 5
      3         raise Exception("Invalid level!", level)
      4         # 触发异常后，后面的代码就不会再执行
----> 5 functionName(0)

Cell In[9], line 3, in functionName(level)
      1 def functionName( level ):
      2     if level < 1:
----> 3         raise Exception("Invalid level!", level)

Exception: ('Invalid level!', 0)