getattr()在类方法中的使用

class Net():
    def __init__(self):
        self.net_list = ['G_A','G_B','D_A','D_B']
        self.netG_A = 'ga'
        self.netG_B = 'gb'
        self.netD_A = 'da'
        self.netD_B = 'db'


    def print_net(self):
        for net_name in self.net_list:
            net = getattr(self, 'net' + net_name)
            print(net)

n = Net()
n.print_net()

结果：

ga
gb
da
db