import sys import os.path import matplotlib from matplotlib import pyplot as plt x = [] y = [] if os.path.exists('bulk_metrics.txt'): with open('bulk_metrics.txt') as file: for line in file.readlines(): single_x, single_y = line.split(" ") x.append(single_x) y.append(single_y) plt.plot(x, y) plt.xlabel('Jobs') plt.ylabel('RMSE') plt.savefig('chart.png')