向字典 a_dict=dict(a=2,b=3)添加 a_dict.a # 2属性

class Struct(dict):
    """
    Object-Dict
    >>> o = Struct({‘a‘:1})
    >>> o.a
    >>> 1
    >>> o.b
    >>> None
    """
    def __init__(self, *e, **f):
        if e:
            self.update(e[0])
        if f:
            self.update(f)

    def __getattr__(self, name):
        # Pickle is trying to get state from your object, and dict doesn‘t implement it.
        # Your __getattr__ is being called with "__getstate__" to find that magic method,
        # and returning None instead of raising AttributeError as it should.
        if name.startswith(‘__‘):
            raise AttributeError
        return self.get(name)

    def __setattr__(self, name, val):
        self[name] = val

    def __delattr__(self, name):
        self.pop(name, None)

    def __hash__(self):
        return id(self)

    def copy(self):
        return Struct(dict.copy(self))

a_dict=dict(a=2, b=3)
a_dict=Struct(a_dict)
b_dict=Struct(a=2, b=3)
print(a_dict.a)    # 2
print(b_dict.a)    # 2

向字典 a_dict=dict(a=2,b=3)添加 a_dict.a # 2属性

原文：https://www.cnblogs.com/laowang-106/p/11352846.html