python 子类向父类传递关键字参数

Question

父类构造函数

class SoapClient(object):
    """Simple SOAP Client (simil PHP)"""
    def __init__(self, location=None, action=None, namespace='',
                 cert=None, proxy=None, ns=None,
                 soap_ns=None, wsdl=None, wsdl_basedir='', ca_certs=None,
                 sessions=False, soap_server=None, timeout=TIMEOUT,
                 http_headers=None, username=None, password=None,
                 key_file=None, **kwds):

子类的构造函数

class _MySoapClient(SoapClient):
    ''' patched SoapClient '''
    def __init__(self,wsdl=None):
        SoapClient.__init__(self,wsdl=wsdl)
        self.hostname_list = []
        self._hostname = None

子类的实例化和传入参数

class _NetAct(object):
    def __init__(self, msgque=None, listeners=[]):
        self._server_port = NETACT_SERVER_PORT
        self._server = None
        self._client = _MySoapClient(wsdl=WSDL_PATH)

这样的方式有问题吗？

Answer 1

有什么问题吗？

Answer 2

class A(object):    # A must be new-style class
    def __init__(self,name = None,age = 30):
        print "enter A"
        self.name = name
        self.age = age
        print self.age
    def bar():
        pass 

class B(A):     # A --> B
    def __init__(self,age=None):
        print "enter B"
        super(B,self).__init__(age=age)
        # A.__init__(self,age = age)
        print "leave B"
    def foo():
        pass

b = B(40)

运行结果：

enter B
enter A
40
leave B