python 异常处理：
简单的异常处理主要依靠内置异常处理结构体，代码结构如下：
try:
…
except ValueError as e: # 异常判断，出现ValueError错误时处理机制
…
except ZeroDivisionError as e: # 异常判断，出现ZeroDivisionError错误时处理机制
…
finally:
…
示例：
# coding = utf-8class Test:def __init__(self, num):self.num = numdef unnormal(self):try:print('开始测试异常情况')r = 10 / self.numprint('result：', r)except TypeError as e:print('TypeError：', e)except ZeroDivisionError as e:print(e)finally:print('finish')op_test1 = Test(num=2)
op_test1.unnormal()op_test2 = Test(num='test')
op_test2.unnormal()op_test3 = Test(num=0)
op_test3.unnormal()
示例运行结果：
