Part-3

Bar Graphs are commonly used to represent data. Lets see how to plot attractive and insightful bar graphs using matplotlib.

## 1. Plot a simple bar graph with two arrays.

`plt.bar([0,1,2,3],[12,23,21,8])`

You can see the bars are centered around 0,1,2 and 3 x-coordinate.

Now let's see how can we plot graphs to compare data of two years. …