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请用代码描述如何定义异常类、抛出异常类以及捕捉异常类 #111

@Sogrey

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@Sogrey
class MyException(Exception):
    pass

num = 50
try:
    if num >= 10:
        raise MyException('抛出异常')
    print('正常执行代码')
except MyException:
    print('发生了异常')

自定义异常类需要从Exception类继承,抛出异常类使用raise,捕捉异常类使用try except语句。

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