ec_dejunkfying.py

import matplotlib.pyplot as plt
import numpy as np

plt.figure()

languages =['Python', 'SQL', 'Java', 'C++', 'JavaScript']
pos = np.arange(len(languages))
popularity = [56, 39, 34, 34, 29]

# change the bar colors to be less bright blue
bars = plt.bar(pos, popularity, align='center', linewidth=0, color='lightslategrey')
# make one bar, the python bar, a contrasting color
bars[0].set_color('#1F77B4')

# soften all labels by turning grey
plt.xticks(pos, languages, alpha=0.8)
plt.ylabel('% Popularity', alpha=0.8)
plt.title('Top 5 Languages for Math & Data \nby % popularity on Stack Overflow', alpha=0.8)

# remove all the ticks (both axes), and tick labels on the Y axis
plt.tick_params(top='off', bottom='off', left='off', right='off', labelleft='off', labelbottom='on')

'''
============Alternative way====================
colors = ['red', 'blue', 'blue', 'blue', 'blue']
plt.bar(pos, popularity, align='center', color=colors, alpha = 0.5, linewidth = 0)

plt.xticks(pos, languages)
plt.ylabel('% Popularity', color='grey')
plt.title('Top 5 Languages for Math & Data \nby % popularity on Stack Overflow', color='grey')

plt.tick_params(top='off', bottom='off', left='off', right='off', labelleft='off', labelbottom='on', colors='grey')

'''

# TODO: direct label each bar with Y axis values
for a, b in enumerate(popularity):
    plt.gca().text(a, b-5, str(b)+'%', color='white', fontweight='bold', ha='center')
    
'''
============Alternative way====================
# From Coursera
for bar in bars:
    plt.gca().text(bar.get_x() + bar.get_width()/2, bar.get_height() - 5, str(int(bar.get_height())) + '%', 
                 ha='center', color='w', fontsize=11)

'''
    
# remove the frame of the chart
for spine in plt.gca().spines.values():
    spine.set_visible(False)
plt.show()