import matplotlib.pyplot as plt
from matplotlib import font_manager, rc

f_name = font_manager.FontProperties(fname='C:/Windows/Fonts/HANBatangExt.ttf').get_name()
rc('font', family=f_name)

？？？

plt.plot(run_before, run_after, 'ro-')

？？？

plt.plot(walk_before, walk_after, 'bo-')
plt.figure(figsize=((10,8)))
plt.show()