python callable的理解

Question

class _IMP(object):
    def __init__(self, host='127.0.0.1', nport=8080, sport=8102):
        ''' 8080 for nosecurity, 8443 for security,
            8102 for nosecurity, 8103 for security
        '''
        self.host = host # host address  127.0.0.1|10.6.18.3
        self.nport = nport # north port  8080|8443
        self.sport = sport # south port  8102|8103

    def update(self, **kwargs):
        for k, v in kwargs.iteritems():
            if hasattr(self, k):
                setattr(self, k, v)

    def as_dict(self):
        return {k: getattr(self, k) for k in dir(self) if not k.startswith('_') and \
                 not callable(getattr(self, k))}

a = _IMP()
In [10]: a.as_dict()
Out[10]: {'host': '127.0.0.2', 'nport': 8080, 'sport': 8102}

as_dict 这里的 callable 是什么意思？

Answer 1

callable用來檢查物件是否可調用，更簡單一點來說就是判斷是不是方法

Answer 2

callable就是"可以被call的物件",可以被呼叫的物件.包括函數,類,含有__call__方法的物件等.
你可以在python repl中敲help(callable)看看,或查python文檔,一般基本的問題和概念,都能解答了.

Answer 3

callable(Object)物件Object是否可被呼叫