python异常处理

# --*-- coding: utf-8 --*--
# create by xiaocaiji
#异常处理父类会覆盖子类，多层嵌套错误也能检测
#格式中else也可以换成finally，意味无论前面有没有错误，finally中语句都要执行，常用语文件操作
'''
格式1:
try:
    pass
ecpect NameError as e:
    pass
else:
    pass


格式2:
try:
    pass
ecpect :
    pass
else:
    pass

格式3:
try:
    pass
ecpect (NameError1,NameError2....):
    pass
else:
    pass

'''

# try:
#     print(3/0)
#  except:
#      print("error")
#
# print("******")


# try:
#     print(3/0)
# except ZeroDivisionError as e:
#     print("ZeroDivisionError")
# else:
#     print("no_error")
# print("haha")


try:
    print(3/0)
except (ZeroDivisionError,NameError):
    print("ZeroDivisionError or NameError")
else:
    print("no_error")
print("haha")