异常捕获

# 异常捕获 try/except 语句  finally

# lst=[1,2,3,4]
# try:
#     num=int(input('>>>>'))
#     print(lst[num])
# except ValueError:
#     print('请输入一个数字')
# except ValueError:
#     print('索引越界')



#万能异常捕获
# lst=[1,2,3,4]
# try:
#     num = int(input('>>>>'))
#     print(lst[num])
# except Exception as e:  #捕获报错的类型，打印
#     print(e)



lst=[1,2,3,4]
try:
    num = int(input('>>>>'))
    print(lst[num])
except Exception as e:
    print(e)
finally:
    print('无论上面是否报错都会执行我这里')