python 如何列出所有类属性
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How to list all class properties
提问by tefozi
I have class SomeClass with properties. For example idand name:
我有类 SomeClass 与属性。例如id和name：
class SomeClass(object):
def __init__(self):
self.__id = None
self.__name = None
def get_id(self):
return self.__id
def set_id(self, value):
self.__id = value
def get_name(self):
return self.__name
def set_name(self, value):
self.__name = value
id = property(get_id, set_id)
name = property(get_name, set_name)
What is the easiest way to list properties? I need this for serialization.
列出属性的最简单方法是什么？我需要这个进行序列化。
回答by Mark Roddy
property_names=[p for p in dir(SomeClass) if isinstance(getattr(SomeClass,p),property)]
回答by Alex Martelli
import inspect
def isprop(v):
return isinstance(v, property)
propnames = [name for (name, value) in inspect.getmembers(SomeClass, isprop)]
inspect.getmembersgets inherited members as well (and selects members by a predicate, here we coded ispropbecause it's not among the many predefined ones in module inspect; you could also use a lambda, of course, if you prefer).
inspect.getmembers也获取继承的成员（并通过谓词选择成员，我们在这里编码isprop是因为它不在 module 中的许多预定义成员中inspect；lambda当然，如果您愿意，也可以使用 a ）。
