Python 而True和if语句打印相同的计算

我正在开发一个英尺到英寸的转换器，它实际上非常容易创建，就像我以前做的那样。但这一次，我需要使用while循环。基本上，如果英尺数等于0，它应该打印“程序已成功完成”。如果英尺数大于或等于1，代码将继续进行计算，直到用户输入0退出脚本。我的问题是，当我测试退出脚本时，它会打印： “0英尺=0英寸 程序已成功完成。” 我只想让它打印终止消息，而不是0英尺=0英寸。我不知道我做错了什么

def feet_to_inches(feet):
return 12 * feet

feet = int(input('Enter the number of feet (or 0 to end): '))
inches = feet_to_inches(feet)
print(f'{feet} feet = {inches} inches')

while True:
    if feet == 0:
        print('The program has finished successfully.')
        break
    ...       
    if feet >= 1:
        feet = int(input('Enter the number of feet (or 0 to end): '))
        inches = feet_to_inches(feet)
        print(f'{feet} feet = {inches} inches')
        continue

---

我已经为所需的更改添加了注释

几件事：

• 缩进错误（可能是堆栈溢出）
• 因为您需要用户输入来决定是否退出循环，所以您可以在循环中请求输入，然后决定做什么
• 最终不需要继续

建议代码：

def feet_to_inches(feet):
    return 12 * feet #indentation error

while True:
    feet = int(input('Enter the number of feet (or 0 to end): ')) #moving input inside the while loop
    inches = feet_to_inches(feet)
    if feet == 0:
        print('The program has finished successfully.')
        break     
    elif feet >= 1:
        # feet = int(input('Enter the number of feet (or 0 to end): '))#not required
        # inches = feet_to_inches(feet) #not required
        print(f'{feet} feet = {inches} inches')
        # continue #this is not required

输出：

Enter the number of feet (or 0 to end): 1
1 feet = 12 inches
Enter the number of feet (or 0 to end): 2
2 feet = 24 inches
Enter the number of feet (or 0 to end): 3
3 feet = 36 inches
Enter the number of feet (or 0 to end): 0
The program has finished successfully.

---

请参阅下面的代码，该代码也会检查默认情况

def feet_to_inches(feet):
    return 12 * feet # Please be aware your indentation error

while True:
    feet = int(input('Enter the number of feet (or 0 to end): '))
    inches = feet_to_inches(feet)
    if feet == 0:
        print('The program has finished successfully.')
        break     
    elif feet >= 1:
        print(f'{feet} feet = {inches} inches')
    else:
      print(f'Please provide a positive value')

样本输出：

Enter the number of feet (or 0 to end): 2
2 feet = 24 inches
Enter the number of feet (or 0 to end): 1
1 feet = 12 inches
Enter the number of feet (or 0 to end): -8
Please provide a positive value
Enter the number of feet (or 0 to end): 23
23 feet = 276 inches
Enter the number of feet (or 0 to end): 0
The program has finished successfully.

---

这是英尺到英寸转换器的另一种代码结构

while True:
    feet = int(input('Please enter the number of feet (or 0 to end): '))
    if feet == 0:
        print('Program ended successfully.')
        break
    elif feet < 0:
        print('Please enter a positive value.')
        continue
    else:
        feet_to_inches = 12 * feet
        print('%d feet converts to %d inches'%(feet, feet_to_inches))

为True时：
英尺=int（输入（'请输入英尺数（或0到结尾）：'））
如果英尺=0：
打印（'程序已成功结束'）
打破
elif英尺<0：
打印（'请输入一个正值'）
持续
其他：
英尺到英寸=12*英尺
打印（“%d英尺转换为%d英寸“%（英尺，英尺到英寸））

你总是接受输入，进行转换，打印转换，然后点击条件结束程序……这真的很有帮助！我终于把它打印正确了，谢谢你对我的问题的意见！