matplotlib
What it is good for?
Plotting diagrams.
matplotlib
is capable of producing static images of all common types of diagrams in print quality: line plots, scatter plots, bar charts, pie charts, histograms, heat maps etc.
Installed with Anaconda
yes
How to install it:
pip install matplotlib
Example
Plot a square function:
from pylab import *
x = list(range(-10, 10))
y = [xval**2 for xval in x]
figure()
plot(x, y, 'bo') # blue circles
title('square function')
xlabel('x')
ylabel('$x^2$')
savefig('plot.png')