代码语言：javascript复制
##异常处理
#try:
# pass
#except Exception as ex: Exception（捕获所有错误）可以换成任何异常类型，代表只捕获指定错误，
# 可以写多个except
# pass
##异常类型：
#
#
##完整的异常代码：
# try:
# raise Exception('testeetst') #主动触发异常 ，Exception可以是其他异常类型
# except ValueError as ex:
# print(ex)
# except Exception as ex:
# pass
# else:
# pass
# finally:
# pass
##自定义异常
#继承Exception类
#
##断言
#assert 1==1 相当于if else 然后抛出异常
while True:
n1 = input("num1: ")
n2 = input("num2: ")
try:
n1 = int(n1)
n2 = int(n2)
print(n1 n2)
except Exception as e:
print(e)
