Pprint in Python

1. The background

See mentioned pprint (link: http://bbs.csdn.net/topics/390335772).  
I'm going to give it a try.

2. Pprint profile

Find the online website to explain:

(link: http://docs.python.org/2/library/pprint.html#module-pprint http://

It's just a nice thing for you to print out some relatively complex variables.

3. Use pprint

Try writing some code.

Code:

#-------------------------------------------------------------------------------

# Name:         [record] toss and turn Python In the pprint

# Author:      Crifan Li

#

# Created:     06/01/2013

# Copyright:   (c) Crifan Li 2013

#-------------------------------------------------------------------------------
import pprint;

import re;
def pprintDemo():

    varsList = [

        [1, 2, 3],

        ["ab", "c", "def"],

        re.compile("w+"),

        ("123", "abc"),

        {

            "key1":"value1",

            "key2":"value2",

        },

    ];
    for value in varsList:

        print value;
    print "-"*80;
    pp = pprint.PrettyPrinter(indent=4);

    for value in varsList:

        pp.pprint(value);
    print "="*80;

    stuff = ['spam', 'eggs', 'lumberjack', 'knights', 'ni'];

    stuff.insert(0, stuff[:]);

    print stuff;

    print "-"*80;

    pp.pprint(stuff)
if __name__ == '__main__':

    pprintDemo();

Effect:

[1, 2, 3]

['ab', 'c', 'def']

<_sre.SRE_Pattern object at 0x00000000030DD378>

('123', 'abc')

{'key2': 'value2', 'key1': 'value1'}

--------------------------------------------------------------------------------

[1, 2, 3]

['ab', 'c', 'def']

<_sre.SRE_Pattern object at 0x00000000030DD378>

('123', 'abc')

{   'key1': 'value1', 'key2': 'value2'}

================================================================================

[['spam', 'eggs', 'lumberjack', 'knights', 'ni'], 'spam', 'eggs', 'lumberjack', 'knights', 'ni']

--------------------------------------------------------------------------------

[   ['spam', 'eggs', 'lumberjack', 'knights', 'ni'],

    'spam',

    'eggs',

    'lumberjack',

    'knights',

    'ni']

4. To summarize

Pprint, that's interesting.

You can use it later in code debugging.