python_while true

while true的實現

標準格式

while True:
    try:
    
    except:
       

例項，下面有兩個例子，分別是引入while true，使得在輸入錯誤的情況下繼續輸入和終止

例子1

kk = {
    '200':'OK',
    '202':'Accepted',
    '400':'Bad Request',
    '403':'Forbidden',
    '404':'Not Found',
    '500':'Internal Server Error',
    '502':'Bad Gateway'
    }
    
while True:
    try:
        message = input()
        ans = kk[message]
        print(ans)
    except:
        continue

此時結果為：

例子2

kk = {
    '200':'OK',
    '202':'Accepted',
    '400':'Bad Request',
    '403':'Forbidden',
    '404':'Not Found',
    '500':'Internal Server Error',
    '502':'Bad Gateway'
    }


while True:
    try:
        message = input()
        ans = kk[message]
        print(ans)
    except:
        break

此時結果為：