“当真”循环不运行

Question

我的代码：

def make_response(self):
    recognised = False
    get_cmd = False
    database = {
        "hello": "Nice to meet you. What can I do for you?",
        "hi": "Nice to meet you. What can I do for you?",
        "hey": "Nice to meet you. What can I do for you?",
        "goodbye": "Bye. See you next time!"
    }

    self = self.lower()

    for i in database:
        if i in self:
            recognised = True
            value = database.get(i)
            print(value)


def robot():
    print('Welcome to robot.py')
    print('What can I do for you?')

    while True:
        query = input('>')
        make_response(query)


robot()

当我输入“hello”时，程序给出了预期的响应，但它只是退出而没有完成循环。哪条线打破了循环？ 谢谢。

Answer 1

在 Python 3.x 中，工作正常。

也许您正在使用 python 2.x 进行编译。在这种情况下，您需要使用 'raw_input' 而不是 'input'，但我不推荐 raw_input（它在 Python3 中已弃用）。

试试 Python 3.x。

PS：另外，我会将“self”替换为其他变量名。自我用于类。

Answer 2

它不会损坏。请验证您的解决方案。这是修改后的代码

database = {
        "hello": "Nice to meet you. What can I do for you?",
        "hi": "Nice to meet you. What can I do for you?",
        "hey": "Nice to meet you. What can I do for you?",
        "goodbye": "Bye. See you next time!"
    }


def make_response(self):
    self = self.lower()
    value = database.get(self, "Sorry I dont understand")
    print(value)


def robot():
    print('Welcome to robot.py')
    print('What can I do for you?')

    while True:
        query = input('>')

        if query == "goodbye":
            value = database.get(query)
            print(value)
            break
        else:
            make_response(query)

robot()

Answer 3

我完全无法重现。就像代码所说的那样，它不断提示输入新的输入。

顺便说一句，这里稍微简化一下，使用dict.items()：

database = {
    "hello": "Nice to meet you. What can I do for you?",
    "hi": "Nice to meet you. What can I do for you?",
    "hey": "Nice to meet you. What can I do for you?",
    "goodbye": "Bye. See you next time!",
}


def make_response(query):
    query = query.lower()
    for keyword, answer in database.items():
        if keyword in query:
            print(answer)
            break


def robot():
    print("Welcome to robot.py")
    print("What can I do for you?")

    while True:
        query = input(">")
        make_response(query)


robot()

Answer 4

此代码在我的机器上完美运行。但是 Python 2.7 版本的问题。我更喜欢你使用 Python 3.6 或更高版本。

这是一个简化的代码。

代码：

def make_response():
  database = {
        "hello": "Nice to meet you. What can I do for you",
        "hi": "Nice to meet you. What can I do for you?",
        "hey": "Nice to meet you. What can I do for you?",
        "goodbye": "Bye. See you next time!"
      }
  return database

def robot():
    print('Welcome to robot.py')
    print('What can I do for you?')

    while True:
        query = str(input('>'))
        database = make_response()
        if query in list(database.keys()):
            print(database[query])

robot() 

检查一下。 我希望它会有所帮助。