while 循环没有给出预期的结果

Question

我正在学习python3.6 在编写脚本时我遇到了一个问题：

下面是我的代码

from sys import exit

print("Welcome to the official game designed by Prince Bhatia")
print("Copywrite @princebhatia")

def list1():
    loop = 5
    while loop == 5:

    print("Game starts here")
    list1 = ["Rahul", "Prince", "Sam", "Sonu"]
    print("which Player do you choose?")
    print("Now the game starts")
    name1 = input()

    if "Rahul" in name1 or "rahul" in name1:
        print("Rahul Enters the room1")
    elif "Prince" in name1 or "prince" in name1:
        print("Prince Enters the room2")
    elif "Sam" in name1 or "sam" in name1:
        print("Sam Enters the room3")
    elif "Sonu" in name1 or "sonu" in name1:
        print("Sonu Enters the room4")
    else:
        print("Please enter the valid name")
    loop = 6

list1()

print("""-------------------------------------""")

但问题是，每当我输入定义的名称时，它都能正常工作，但当我输入错误的名称时，它会停止，但我想要的应该让我一直询问 "please enter valid name "，直到我输入有效名称。任何建议。 python3.6

这里给space打算给输入码

Answer 1

您可以在 else 中将 5 赋值给 loop，并将 6 的赋值向上移动到同一变量：

from sys import exit

print("Welcome to the official game designed by Prince Bhatia")
print("Copywrite @princebhatia")

def list1():
    loop = 5
    while loop == 5:

    print("Game starts here")
    list1 = ["Rahul", "Prince", "Sam", "Sonu"]
    print("which Player do you choose?")
    print("Now the game starts")
    name1 = input()

    loop = 6

    if "Rahul" in name1 or "rahul" in name1:
        print("Rahul Enters the room1")
    elif "Prince" in name1 or "prince" in name1:
        print("Prince Enters the room2")
    elif "Sam" in name1 or "sam" in name1:
        print("Sam Enters the room3")
    elif "Sonu" in name1 or "sonu" in name1:
        print("Sonu Enters the room4")
    else:
        print("Please enter the valid name")
        loop = 5

list1()

print("""-------------------------------------""")

无论如何，改进这个变量的名称和值是个好主意。最好在此处使用名称为 isInvalidName 的布尔变量。所以你 while 会是：while isInvalidName:

Answer 2

首先，你的缩进是错误的。

问题：不管你是否得到匹配的答案，你都在设置 loop = 6。

这里有一个稍微不同的建议：

print("Game starts here")
print("which Player do you choose?")
print("Now the game starts")

while True:

    name1 = input()

    if "Rahul" in name1 or "rahul" in name1:
        print("Rahul Enters the room1")
        break
    elif "Prince" in name1 or "prince" in name1:
        print("Prince Enters the room2")
        break
    elif "Sam" in name1 or "sam" in name1:
        print("Sam Enters the room3")
        break
    elif "Sonu" in name1 or "sonu" in name1:
        print("Sonu Enters the room4")
        break
    else:
        print("Please enter the valid name")

这样我们在获得有效输入后就中断循环，否则我们将无限期地循环。

while 循环没有给出预期的结果

while loop is not giving expected results

while-loop

python-3.6