在Python中读取用户输入

Question

编写执行以下操作的嵌套决策结构：如果amount1大于10而amount2小于100，则显示amount1和amount2中的较大者。在

到目前为止，我得到的是：

amount1=print('Enter amount1:')
amount2=print('Enter amount2:')
if amount1> 10 and amount2< 100:
    if amount1>amount2:
        print('amount1 is greater')
    elif amount2>amount1:
        print('amount2 is greater')
else:
    print('Amounts not in valid range')

运行程序时，出现以下错误消息：

^{pr2}$

Answer 1

你是说

amount1=raw_input('Enter amount1:')
amount2=raw_input('Enter amount2:')

if amount1> 10 and amount2< 100:
    if amount1>amount2:
        print('amount1 is greater')
    elif amount2>amount1:
        print('amount2 is greater')
else:
    print('Amounts not in valid range')

Answer 2

1. 您需要使用input而不是print函数。在
2. 您需要将变量amount1和amount2转换为int数据类型。在

    amount1=int(input('Enter amount1:'))
    amount2=int(input('Enter amount2:'))
    if amount1> 10 and amount2< 100:
        if amount1>amount2:
            print('amount1 is greater')
        elif amount2>amount1:
            print('amount2 is greater')
    else:
        print('Amounts not in valid range')

Answer 3

print()函数返回None，存储在amount1和{}中。您可能想在那里使用input()代替：

amount1 = input('Enter amount1:')
amount2 = input('Enter amount2:')