import matplotlib.pyplot as plt import numpy as np x=np.linspace(-3,3,50) y1=x*2+1 y2=x**2 plt.plot(x,y1) plt.figure(num=3,figsize=(8,5)) plt.plot(x,y2) plt.plot(x,y1,color="red",linewidth=1.0,linestyle="--") plt.xlim((-1,2)) plt.ylim((-2,3)) plt.xlabel("I am x") plt.ylabel("I am y") new_ticks=np.linspace(-1,2,5) print(new_ticks) plt.xticks(new_ticks) plt.yticks([-2,-1.8,-1,1.22,3,], [r'$really\ bad$',r'$bad\ \alpha$',r'$normal$',r'$good$','$really\ good$']
#gca='get current axis'
ax = plt.gca()
ax.spines['right'].set_color('none')
ax.spines['top'].set_color('none')
ax.xaxis.set_ticks_position('bottom')
ax.yaxis.set_ticks_position('left')
ax.spines['bottom'].set_position(('data',0))
ax.spines['left'].set_position(('data',0))
plt.show()