item方法

class Foo:
    def __init__(self,name,age,sex):
        self.name =name
        self.age =age
        self.sex =sex
    def __getitem__(self, item):
        if hasattr(self,item):
            return self.__dict__[item]
    def __setitem__(self, key, value):
        self.__dict__[key] =value
    def __delitem__(self, key):
        del self.__dict__[key]
f =Foo('egon',38,'男')
f['name']
f['hobby']='sk'
print(f['name'],f['hobby'])
print(f.name,f.hobby)
# del f['hobby']