Python Language Basics, IPython, and Jupyter Notebooks

import numpy as np
np.random.seed(12345)
np.set_printoptions(precision=4, suppress=True)

The Python Interpreter

$ python
Python 3.6.0 | packaged by conda-forge | (default, Jan 13 2017, 23:17:12)
[GCC 4.8.2 20140120 (Red Hat 4.8.2-15)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> a = 5
>>> print(a)
5

print('Hello world')