小编San*_*hae的帖子

我目前正在研究python编程.

class A:
    def LoadPosition(self):
        FILE = open('a.txt', "r+")

        i = 0
        for node in self.nodes:
            line = FILE.readline()
            if i == 0:
                scaling_factor == float(line)
                i += 1
            else:
                tmpn, tmpx, tmpy, tmpa = line.split('\t')
                node.id = tmpn
                node.coordinate_x = float(tmpx)
                node.coordinate_y = float(tmpy)
                node.area = int(tmpa)
        FILE.close()

以前很好,但突然之间,它显示了NameError消息.请帮帮我.

提前致谢.