如果p1不在“PlayerNames”列表中，我如何重复输入问题？ 这是我的代码:
playernames = 'John', 'Steve', 'Mary'
p1 = str(input("What is player 1's name? "))
if p1 in playernames:
print('Access Granted')
elif #How do I loop the player back to the start of the input?
print()
谢谢
下面是一个简单的代码。
playernames = ['John', 'Steve', 'Mary']
p1 = input("What is player 1's name? ")
while p1 not in playernames:
print("Player not found!")
p1 = input("What is player 1's name? ")
您的代码中有几个错误，我已经更正了:
playernames='John'，'Steve'，'Mary'变为playernames=['John'，'Steve'，'Mary']str，因为input()默认情况下返回字符串。为了引起您的注意，这段代码中的另一个改进可以是处理字母情况。 例如，如果用户输入的john在您的列表中，但第一个字母不是大写的。 因此，循环不会中断并再次请求输入。
使用无限循环是重复输入问题的好方法。 当条件满足时（用户键入一个playernames），它将结束无限循环。
playernames = "John", "Steve", "Mary"
finished = False
while not finished:
p1 = str(input("What is player 1's name? "))
if p1 in playernames:
print("Access Granted")
finished = True
else:
print("Players not in playernames")
print()
playernames = ['John', 'Steve', 'Mary']
while True:
p1 = str(input("What is player 1's name? "))
if p1 in playernames:
break
一条线:
while input("What is player 1's name?") not in playernames: print("Input Name is not correct")
