How to extend pretty print module to tables?

Question

I have the pretty print module, which I prepared because I was not happy the pprint module produced zillion lines for list of numbers which had one list of list. Here is exa

Answer 1

My answer to this kind of regular cases would be to use this module: prettytable A simple Python library for easily displaying tabular data in a visually appealing ASCII table format

Answer 2

If you're looking for nice formatting for matrices, numpy's output looks great right out of the box:

from numpy import *
print array([[i + j for i in range(10)] for j in range(10)])

Output:

[[ 0  1  2  3  4  5  6  7  8  9]
 [ 1  2  3  4  5  6  7  8  9 10]
 [ 2  3  4  5  6  7  8  9 10 11]
 [ 3  4  5  6  7  8  9 10 11 12]
 [ 4  5  6  7  8  9 10 11 12 13]
 [ 5  6  7  8  9 10 11 12 13 14]
 [ 6  7  8  9 10 11 12 13 14 15]
 [ 7  8  9 10 11 12 13 14 15 16]
 [ 8  9 10 11 12 13 14 15 16 17]
 [ 9 10 11 12 13 14 15 16 17 18]]

Answer 3

Using George Sakkis' table indention recipe:

print(indent(((i + j for i in range(10)) for j in range(10)),
             delim=' ', justify='right'))

yields:

0  1  2  3  4  5  6  7  8  9
1  2  3  4  5  6  7  8  9 10
2  3  4  5  6  7  8  9 10 11
3  4  5  6  7  8  9 10 11 12
4  5  6  7  8  9 10 11 12 13
5  6  7  8  9 10 11 12 13 14
6  7  8  9 10 11 12 13 14 15
7  8  9 10 11 12 13 14 15 16
8  9 10 11 12 13 14 15 16 17
9 10 11 12 13 14 15 16 17 18

PS. To get the above to work, I made one minor change to the recipe. I changed wrapfunc(item) to wrapfunc(str(item)):

def rowWrapper(row):
    newRows = [wrapfunc(str(item)).split('\n') for item in row]

Answer 4

You can write:

'\n'.join(  # join the lines with '\n'
       ' '.join(  # join one line with ' '
              "%2d" % (i + j) # format each item
        for i in range(10))
    for j in range(10))