1/ 區域性變數的定義

    在所有函式內定義的變數叫區域性變數,在函式外的都是全域性變數.

for guessTaken in range(1,2):
    print('Take a guess')
    guess = int(input())

    if(guess < secretNumber):
        print('your guess too low')
    elif(guess > secretNumber):
        print('your guess too high')
    else:
        
 
break




if(guess == secretNumber):
    print('oK')
else:
    print('fail')

一定注意,上面描述的guess 是全部變數,因為它沒有在函式中定義,故不能算區域性變數.