import matplotlib.pyplot as plt

x1 = range(1,10,1)
y1 = []
for x in x1:
	y1.append(5*x)

x2 = range(100,200,1)
y2 = []
for x in x2:
	y2.append(5*x+30)

fig = plt.figure()

ax1 = fig.add_subplot(111)
ax1.plot(x1,y1,'b--')

ax2 = ax1.twiny()
ax3 = ax2.twinx()
ax3.plot(x2,y2,'go')

ax1.set_xlabel('xValue')
ax1.set_ylabel('yValue')

ax2.set_xlabel('myXValue')
ax3.set_ylabel('myYValue')
plt.show()