import matplotlib.pyplot as plt;


import numpy as np
import matplotlib.pyplot as plt

objects = ('Ajay','Rahul','Srinidhi')
y_pos = np.arange(len(objects))
performance = [10000,20000,5000]

plt.bar(y_pos, performance, align='center', alpha=0.5)
plt.xticks(y_pos, objects)
plt.ylabel('Usage')
plt.title('Programming language usage')

plt.show()