如下所示：

import matplotlib.pyplot as pltimport numpy as npdef readfile(filename): dataList = [] dataNum = 0 with open(filename,'r') as f: for line in f.readlines(): linestr = line.strip('\n') if len(linestr) < 8 and len(linestr) >1: dataList.append(float(linestr)) dataNum += 1 return dataList, dataNum y, range = readfile("./session.log") # print yprint "range=%d" % (range) x = np.linspace(0, 1, range)# plt.plot(x, y, 'r-o')plt.plot(x, y)plt.show()

数据格式：

0.89600.94560.90690.91280.93061.01861.03270.98350.94380.98070.99491.07371.08421.04451.06091.06640.97481.04271.09831.08141.10831.1051

图形：

以上这篇python实现从文件中读取数据并绘制成 x y 轴图形的方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。