授予的访问权限未在第三次尝试中出现

Question

在最后一次尝试中，如果输入了正确的密码，则程序退出前不会出现“授予访问权限”的字样

AccessGranted = False
attempt = 1
password = input("Please enter your password: ")
while (attempt < 3) and (AccessGranted == False):
           if password == "compScience":
                      AccessGranted = True
                      print("Access granted")

           else:
                      password = input("Incorrect password -  re-enter: ")
                      attempt = attempt +1

Answer 1

在else语句内进行第三次输入尝试后，attempt等于3，然后循环结束（您不应将输入放在else内）。这就是程序退出并且不显示任何内容的原因。如果您只想尝试3次，我认为以下代码会更好：

AccessGranted = False
attempt = 1
while (attempt < 4) and (AccessGranted == False):
    password = input("Password: ")
    if password == "compScience":
        AccessGranted = True
        print("Access granted")
    else:
        print("Incorrect password. ")
        attempt = attempt + 1

您可以看到我将输入放置在while循环内，并且为了允许3次尝试，停止条件变为attempt < 4。