prompt = "Enter your age for ticket price"
prompt += "\nEnter quit to exit: "
active = True
while active:
age = input(prompt)
age = int(age)
if age == 'quit':
active = False
elif age < 3:
print("Your ticket is $5")
elif age >= 3 and age < 12:
print("Your ticket is $10")
elif age >= 12:
print("Your ticket is $15")
这是一些相当简单的代码，但是我遇到一个问题。问题是，要使代码运行年龄，必须将其转换为int。但是，当您键入“退出”时，程序也应该退出。您总是可以按照“您要添加更多人吗？”的提示输入另一个提示。但是，是否有一种方法可以使其运行而不必提示另一个问题？
答案 0 :(得分：1)
我建议您摆脱public class Functions
{
private readonly IHostService _hostService;
public Functions(IHostService hostService)
{
_hostService = hostService;
}
// This function will get triggered/executed when a new message is written
// on an Azure Queue called queue.
public void ProcessQueueMessage([QueueTrigger("newrequests")] string dd,
//DateTimeOffset expirationTime,
//DateTimeOffset insertionTime,
//DateTimeOffset nextVisibleTime,
//string queueTrigger,
//string id,
//string popReceipt,
//int dequeueCount,
ILogger logger)
{
var newRequestItem = new RequestQueueItem();
logger.LogTrace($"New queue item received...");
//logger.LogInformation($" QueueRef = {id} - DequeueCount = {dequeueCount} - Message Content [Id = {newRequestItem.Id}, RequestDate = {newRequestItem.RequestDate}, Mobile = {newRequestItem.Mobile}, ProviderCode = {newRequestItem.ProviderCode}, ItemIDClass = {newRequestItem.MappingIDClass}]");
// TODO: Read the DatabaseConnectionString from App.config
logger.LogTrace($" Getting DB ConnectionString...");
var connectionString = ConfigurationManager.ConnectionStrings["DatabaseConnection"].ConnectionString;
// TODO: Initiation of provider service instance
logger.LogTrace($" Init IalbayanmtnclientserviceClient service instance...");
var bayanService = new AlbayanMtnWCFService.IalbayanmtnclientserviceClient();
// TODO: sending request to provider service endpoint and wait for response
logger.LogTrace($" Sending request to Service Endpoint...");
var response= bayanService.requestpaymenttransactionAsync("agentcode", "agentpassword", "accountno", int.Parse(newRequestItem.TransactionType), newRequestItem.MappingIDClass, newRequestItem.Mobile, (int)newRequestItem.Id).Result;
logger.LogTrace($"Done processing queue item");
}
}
标志，而在输入active时只需break，这样，您就可以安全地转换为"quit"，因为如果输入了int，则代码不会达到该点：
"quit"请注意，while True:
age = input(prompt)
if age == "quit":
break
age = int(age)
if age < 3:
print("Your ticket is $5")
elif age < 12:
print("Your ticket is $10")
else:
print("Your ticket is $15")
和age >= 3检查是不必要的，因为您已经通过较早的检查保证了它们。
答案 1 :(得分：0)
如果要添加另一个提示，则可以在循环之前询问第一个提示，并在循环结束时询问另一个提示。如果要添加价格，则需要一个变量。如果您不想提示其他问题，但需要更多用户输入，请将该提示留空。
prompt = "Enter your age for ticket price"
prompt += "\nEnter 'quit' to exit: "
price = 0
user_input = input(prompt)
while True:
if user_input == 'quit':
break
age = int(user_input)
if age < 3:
price += 5
elif age < 12:
price += 10
else:
price += 15
print(f"Your ticket is ${price}")
user_input = input("You can add an age to add another ticket, or enter 'quit' to exit. ")