Matplotlib

Installation

Best to create a virtual environment

$ python -m venv ~/env-for-my-work
$ . ~/env-for-my-work/bin/activate
(env-for-my-work) $

Install via Python Package Index

(env-for-my-work) $ python -m pip install matplotlib

Basic Usage

basic.py
import matplotlib.pyplot as plt

x = [1, 2, 3, 4]
y = [i**2 for i in x]

plt.plot(x, y)
plt.ylabel('squares')
plt.show()

Axis Ranges

Axis ranges are specified in the form [xmin, xmax, ymin, ymax], like so,

axis.py
import matplotlib.pyplot as plt

x = [1, 2, 3, 4]
y = [i**2 for i in x]

plt.plot(x, y)
plt.axis([0, 8, 0, 20])
plt.ylabel('squares')
plt.show()