Question

所以我只是想用python写一些东西，我需要使此代码循环直到指定“ Yes”或“ yes”，但即使未指定“ Yes”或“ yes”，它也会不断中断。请帮助我解决此问题，并在此先感谢。

print("Please now take the time to fill in your DOB:")
DOB_day = raw_input ("Date of month:")
DOB_month = raw_input ("Month:")
DOB_year = raw_input ("Year:")

DOB_confirmation = raw_input ("Please confirm, is this correct?")


while DOB_confirmation != "No" or "no":
    DOB_day = raw_input ("Date of month:")
    DOB_month = raw_input ("Month:")
    DOB_year = raw_input ("Year:")
    DOB_confirmation = raw_input ("Please confirm, is this correct?")
    if DOB_confirmation == "Yes" or "yes":
        break

Answer 1

看看您的while DOB_confirmation != "No" or "no":行。您正在尝试说“虽然确认答案不是，但继续要求生日”……但这不是您写的。您还错误地使用了or。

尝试以下操作：while DOB_confirmation.lower() != "yes":。实际上就是说“您没有在用户输入任何形式的'是'”。

您可以在末尾消除if语句-while循环将其覆盖。

尝试一下：

print("Please now take the time to fill in your DOB:")
DOB_day = input("Date of month:")
DOB_month = input("Month:")
DOB_year = input("Year:")

DOB_confirmation = input("Please confirm, is this correct?")


while DOB_confirmation.lower() != "yes":
      DOB_day = input("Date of month:")
      DOB_month = input("Month:")
      DOB_year = input("Year:")
      DOB_confirmation = input("Please confirm, is this correct?")

Answer 2

尝试这样运行代码

print("Please now take the time to fill in your DOB:")

while True:
    DOB_day = raw_input("Date of month:")
    DOB_month = raw_input("Month:")
    DOB_year = raw_input("Year:")
    DOB_confirmation = raw_input ("Please confirm, is this correct? (Yes/No)")
    if DOB_confirmation.lower() == "yes":
        break

我喜欢做这种类型的循环，它可以替代Java中的do-while。

.lower()将您的字符串变成小写。因此，如果用户键入“是”或“ yEs”等，它将像“是”一样读取字符串。

您还可以使用.upper()将字符串变成大写。希望这会有所帮助。

Answer 3

raw_input在我的Python版本（3.7.0）中未定义，因此我将其替换为常规input。此外，一旦我缩进了所有内容，除了接受“是”之外，它似乎都可以正常工作。

代码：

print("Please now take the time to fill in your DOB:")
DOB_day = input ("Date of month:")
DOB_month = input ("Month:")
DOB_year = input ("Year:")

DOB_confirmation = input ("Please confirm, is this correct?")


while DOB_confirmation != "No" or "no":
    DOB_day = input ("Date of month:")
    DOB_month = input ("Month:")
    DOB_year = input ("Year:")
    DOB_confirmation = input ("Please confirm, is this correct?")
    if DOB_confirmation == "Yes" or "yes":
        break

print("broke (the good way)")

输出：

================= RESTART: C:/work/stackoverflow/laksjdfh.py =================
Please now take the time to fill in your DOB:
Date of month:asdf
Month:fasd
Year:3232
Please confirm, is this correct?q
Date of month:asdf
Month:fasd
Year:gggf
Please confirm, is this correct?YES
broke (the good way)
>>>

输入特定内容后，如何使python中断

3 个答案: