如何创建具有多种原因的python异常？

class MultipleReasonsException(Exception):
    pass

class MultipleReasonsException(Exception):
    REASON_1 = "Reason 1"
    REASON_2 = "Reason 2"
    REASON_3 = "Reason 3"

def some_function():
    # 根据不同的条件抛出不同的异常原因
    if condition_1:
        raise MultipleReasonsException(MultipleReasonsException.REASON_1)
    elif condition_2:
        raise MultipleReasonsException(MultipleReasonsException.REASON_2)
    else:
        raise MultipleReasonsException(MultipleReasonsException.REASON_3)

try:
    some_function()
except MultipleReasonsException as e:
    if e.args[0] == MultipleReasonsException.REASON_1:
        # 处理 Reason 1 的异常情况
        pass
    elif e.args[0] == MultipleReasonsException.REASON_2:
        # 处理 Reason 2 的异常情况
        pass
    elif e.args[0] == MultipleReasonsException.REASON_3:
        # 处理 Reason 3 的异常情况
        pass