import matplotlib.pyplot as plt
from matplotlib import cm
import math
import numpy as np

# langages de programmation
x_labels = [ 'C++', 'Ruby', 'Python', 'Php' ]

x_values = [ 1, 2, 3, 4 ]
y_values = [ 20, 10, 30, 15 ]

plt.barh(y=x_values, width=y_values, height=0.9, 
	color=['#be7733', '#138ABc', '#89bf76', '#4A987f'],
	tick_label = x_labels, hatch="/", 
	edgecolor='#888888')
plt.savefig('img/plot_barh_chart.png')
plt.show()