python中的id()函数及读取list的方法介绍（代码示例）

def addElement(_list):

    print(6,id(_list))

    _list.append(0)

    print(7,id(_list))

    return _list

if __name__=="__main__":

    list1=[1,2,3]

    print(1,id(list1))

    list2 = addElement(list1)

    print(2,list1)

    print(3,id(list1))

    print(4,list2)

    print(5,id(list2))

(1, 48757192L)

(6, 48757192L)

(7, 48757192L)

(2, [1, 2, 3, 0])

(3, 48757192L)

(4, [1, 2, 3, 0])

(5, 48757192L)