问题描述：
从文件中读取X坐标和Y坐标，绘制折线图，代码和结果如下：
import matplotlib.pyplot as plt import matplotlib.animation as animation from matplotlib import style style.use(‘dark_background‘) fig = plt.figure() graph_data = open(‘example.txt‘,‘r‘).read() lines = graph_data.split(‘\n‘) xs = [] ys = [] for line in lines: if len(line) > 1: x, y = line.split(‘,‘) xs.append(x) ys.append(y) plt.plot(xs, ys) plt.show()
解决：
我想这种bug也只有计算机专业能想到吧。。。
那就是——类型错误！从文件中读到的每个x和y为字符串，应该转换成int类型。改正后：
import matplotlib.pyplot as plt import matplotlib.animation as animation from matplotlib import style style.use(‘dark_background‘) fig = plt.figure() graph_data = open(‘example.txt‘,‘r‘).read() lines = graph_data.split(‘\n‘) xs = [] ys = [] for line in lines: if len(line) > 1: x, y = line.split(‘,‘) xs.append(int(x)) #注意读取到的是字符串类型 ys.append(int(y)) plt.plot(xs, ys) plt.show()
