set legend axis matplotlib code example

Example 1: matplotlib add legend axis x

fig = plt.figure(figsize=(10,5))
ax = fig.add_subplot(111)
ax.set_title('ADR vs Rating (CS:GO)')
ax.scatter(x=data[:,0],y=data[:,1],label='Data')
plt.plot(data[:,0], m*data[:,0] + b,color='red',label='Our Fitting 
Line')
ax.set_xlabel('ADR')
ax.set_ylabel('Rating')
ax.legend(loc='best')
plt.show()

Example 2: legend matplotlib

import matplotlib.pyplot as plt

#define x and ysin
plt.plot(x,ysin,label='sin(x)')
plt.legend()
plt.show()