問題描述

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|10.6.18.3self.nport = nport # north port 8080|8443self.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 這里的 callable 是什么意思？

問題解答

callable用于檢查對(duì)象是否可調(diào)用，更簡(jiǎn)單一點(diǎn)來說就是判斷是不是方法

callable就是'可以被call的對(duì)象',可以被調(diào)用的對(duì)象.包括函數(shù),類,含有__call__方法的對(duì)象等.你可以在python repl中敲help(callable)看看,或者查python文檔,一般基本的問題和概念,都能解答了.

callable(Object)對(duì)象Object是否可被調(diào)用