用戶輸入的最小值和最大值

Question

下面的程序獲取用戶輸入並從輸入的數字中輸出最小值和最大值，但它總是打印「無」，我找不到任何錯誤（顯然我錯過了一些東西） 。任何人都可以幫助我理解錯誤。

largest = None 
smallest = None 

while True: 
    num1 = raw_input("Enter a number: ") 
    if num1 == "done" : break 

    try: 
     num=int(num1) 
    except: 
     print 'Invalid input' 
     continue 

     if smallest is None or num < smallest: 
      smallest = num 

     if largest is None or num > largest: 
      largest = num 

print "Maximum is", largest 
print "Minimum is", smallest 

Answer 1

您的if語句過於縮進。

largest = None 
smallest = None 

while True: 
    num1 = raw_input("Enter a number: ") 
    if num1 == "done" : break 

    try: 
     num=int(num1) 
    except: 
     print 'Invalid input' 
     continue 

    if smallest is None or num < smallest: 
     smallest = num 

    if largest is None or num > largest: 
     largest = num 

print "Maximum is", largest 
print "Minimum is", smallest