If I want to generate a bar chart, that is also very simple. It's a kind of a similar idea to the pie chart. Let's look at the following code.

values = [12, 55, 4, 32, 14] 
colors = ['r', 'g', 'b', 'c', 'm'] 
plt.bar(range(0,5), values, color= colors) 
plt.show() 

I've defined an array of values and an array of colors, and just plot the data. The above code plots from the range of 0 to 5, using the y values from the values array and using the explicit list of colors listed in the colors array. Go ahead and show that, and there you have your bar chart: