面向对象反射四个方法

# 1,实例化一个对象去研究
# class A:
#     country = 'China'
#
#     def __init__(self, name, age):
#         self.name = name
#         self.age = age
#
#
# a1 = A('alex', 1000)
# print(a1.name)
# print(getattr(a1,'name1'))  从对象中得到这个属性对应的值
# print(hasattr(a1,'age'))   判断此对象中,有没有这个属性
# setattr(a1,'sex','男')
# setattr(a1,'name','wusir')
# print(getattr(a1,'name'))
# print(getattr(a1,'sex'))  # 对一个对象设置属性
# delattr(a1,'name')  # 对一个对象属性删除
# print(getattr(a1,'name'))

# if hasattr(a1,'name1'):
#     getattr(a1,'name1')
# else:
#     print('没有...')


# 2,类中去研究.
class A:
    country = 'China'
    job = 'student'

    def __init__(self, name, age):
        self.name = name
        self.age = age
    def func(self):
        print('in func')
print(getattr(A,'country1',False))
if getattr(A,'country1',False):
# content = input('>>>').strip()  # country
# print(A.content)  #(A.'country')

# name = '1 + 2'
# name2 = 'name'
# print(eval(name2))     #####eval 不推荐使用


# print(A.country)
# print(A.content)
# print(eval('1+ 2'))

# content = input('>>>').strip()  # 'country'
# 你拿到的是一个字符串类型,然后你又想对这个类进行操作
# if hasattr(A,content):
#     print(getattr(A,content))

# print(getattr(A,'job1','没有此值'))
# print(getattr(A,'func'))
# getattr(A,'func')(11)

# 3,其他模块去研究.
import oldboy
# print(oldboy.B.name_list)

# bobj = getattr(oldboy,'B')
# print(getattr(bobj,'name_list'))
#
# print(getattr(oldboy.B,'name_list'))

# print(getattr(oldboy.B,'add')(3,4))
# print(getattr(oldboy,'login')('alex','123'))
# def func():
#     pass
# print(func())


# 4,本模块(本文件)去研究.
# import sys
# def login():
#     print(55)
#
# def func3():
#     print(333)
#
# # content = input(">>>")
# # print(content())  # 这样错的
# print(sys.modules[__name__])
# getattr(sys.modules[__name__],'login')()