用户输入的最小值和最大值

Question

下面的程序获取用户输入并从输入的数字中输出最小值和最大值，但它总是打印“无”，我找不到任何错误（显然我错过了一些东西） 。任何人都可以帮助我理解错误。

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语句过于缩进。

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