静态方法中的python类变量

Question

[更新]：完整代码

我总是对 pyhton 的静态方法感到困惑，但根据这个（最后一个答案），它应该可以工作！

得到错误：

AttributeError: 类 MyConnection 没有属性“myuser”

class MyConnection:
    def __init__(self, hostname, port, user, password):
        myhostname = hostname
        myport = port
        myuser = user
        mypassword = password
        isisessid = None

    @staticmethod
    def connect():
        my_session = MyConnection()

        headers = {'content-type': 'application/json'}
        headers['Authorization'] = 'Basic ' + string.strip(
            base64.encodestring(MyConnection.myuser + ':' + MyConnection.mypassword))

        body = json.dumps({'username': MyConnection.myuser, 'password': MyConnection.mypassword,
            'services': ['platform', 'namespace']})

        uri = '/session/1/session'

        connection = httplib.HTTPSConnection(MyConnection.myhostname, MyConnection.myport)
        connection.connect()

        try:
            connection.request('POST', uri, body, headers)
            response = connection.getresponse()
            my_session.isisessid = MyConnection.extract_session_id(
                response.getheaders())
        except Exception, e:
            print e
            connection.close()
        except httplib.BadStatusLine, e:
            print e
            connection.close()

        return my_session

Answer 1

如果属性将是静态的，不要在初始化方法中初始化它们，而是在类级别之外声明它们，而不是在方法级别。

但是为什么要在初始化程序中初始化类属性？您创建的每个实例都将覆盖它们的值！

我相信您对实例属性和类属性的用途感到困惑。为什么不尝试仅使用实例属性？考虑到所有因素，拥有静态数据并不是一个好主意。例如：

class MyConnection:
    def __init__(self, hostname, port, user, password):
        self.myhostname = hostname
        self.myport = port
        self.myuser = user
        self.mypassword = password
    @staticmethod
    def connect():
        my_session = MyConnection()
        print my_session.myuser # just an example