Generating the bar chart

bar.py

import numpy as np

dates = []
mins = []
for i in range(0,len(mylist)):
    dates.append(mylist[i][0])
    mins.append(int(mylist[i][1]/60))

#xcordinates of the bars
xpos = np.arange(len(dates))

#setting labels of xcordinates of the bars 
plt.xticks(xpos,dates)
plt.bar(xpos,mins)

#putting values of bars as label on top of the bar 
for i in range(0,len(mins)):
    plt.text(xpos[i]-0.075 , mins[i] + 3, str(mins[i]), color='red')
plt.show()