import matplotlib.pyplot as plt fig_wer, ax_wer = plt.subplots() fig_srr, ax_srr = plt.subplots() X1, Y1 = [], [] X2, Y2 = [], [] y_num=1 for line in open('wer.txt', 'r'): Y1.append(line) X1.append(y_num) y_num=y_num+1 ax_wer.plot(X1, Y1) ax_wer.set_title("WER") fig_wer.savefig('wer.png') y_num=1 for line in open('srr.txt', 'r'): Y2.append(line) X2.append(y_num) y_num=y_num+1 ax_srr.plot(X2, Y2) ax_srr.set_title("SRR") fig_srr.savefig('srr.png')