Pretty print not working?

Question

matrix = [ [1,2,3], [4,5,6], [7,8,9] ]
import pprint
pp = pprint.PrettyPrinter(indent=4)
pp.pprint(matrix)

This does not pretty print. It ugly prints.

[[1, 2, 3], [4, 5, 6], [7, 8, 9]]

What gives??

Answer 1

Its because the length of the printed array when on one line is less than the default width of 80. You might want to review the documentation for pprint.

For example, if we do:

matrix = [ [1,2,3], [4,5,6], [7,8,9] ]
import pprint
pp = pprint.PrettyPrinter(indent=4,width=20)
pp.pprint(matrix)

We get:

[   [1, 2, 3],
    [4, 5, 6],
    [7, 8, 9]]