为什么类“QuoteClientFactory”没有被理解为pycharm中的定义？

Posted 2021-03-27

我正在学习网络编程与o'REilys Twisted网络编程必不可少的指南。 （使用pycharm IDE）

我有两个问题，函数maybeStopReactor（）在pycharm中没有被识别，而QuoteClientFactory也不被视为一个已定义的类。

我该如何为此寻找解决方案？

class QuoteClientFactory(protocol.ClientFactory):
    def __init__(self, quote):
        self.quote = quote

    def buildProtocol(self, addr):
        return QuoteProtocol(self)

    def clientConnectionFailed(self, connector, reason):
        print("connecton failed:"), reason.getErrorMessage()
        **maybeStopReactor()**

    def clientConnectionLost(self, connector, reason):
        print("connection lost"), reason.getErrorMessage()
        maybeStopReactor()

    def maybeStopReactor(self):
        global quote_counter
        quote_counter -=1
        if not quote_counter:
            reactor.stop()

    quotes = [
        "you snooze you lose",
        "The early bird gets the worm",
        "carpe diem"
    ]

    quote_counter = len(quotes)

    for quote in quotes:
        **reactor.connectTCP('localhost', 6942, QuoteClientFactory(quote))**
    reactor.run()

答案

你的缩进是错的。这有点难以看清，因为代码跨越了分页符。你想要的是：

class QuoteClientFactory(protocol.ClientFactory):
    def __init__(self, quote):
        self.quote = quote

    def buildProtocol(self, addr):
        return QuoteProtocol(self)

    def clientConnectionFailed(self, connector, reason):
        print("connecton failed:"), reason.getErrorMessage()
        maybeStopReactor()

    def clientConnectionLost(self, connector, reason):
        print("connection lost"), reason.getErrorMessage()
        maybeStopReactor()

def maybeStopReactor():
    global quote_counter
    quote_counter -=1
    if not quote_counter:
        reactor.stop()

quotes = [
    "you snooze you lose",
    "The early bird gets the worm",
    "carpe diem"
]

quote_counter = len(quotes)

for quote in quotes:
    reactor.connectTCP('localhost', 6942, QuoteClientFactory(quote))
reactor.run()