Python: string (3) split a string

Abstract: split a string using split(),rsplit(), partition(), and import re module

The result:
split string by delimiter
In: We,are,the,world
Out: ['We', 'are', 'the', 'world']

split string by one or more white space
In: We are  the world  
Out: ['We', 'are', 'the', 'world']

split string by delimiter, Split from the right, rule the splited parts.
In: We,are,the,world,and,great,day
Out: ['We', 'are', 'the', 'world', 'and', 'great', 'day']
Out: ['We,are,the,world,and,great', 'day']
Out: ['We,are,the,world', 'and', 'great', 'day']

split string by the first seperate and return tuple
In: We,are,the,world,and,great,day
Out: ('We', ',', 'are,the,world,and,great,day')
Out: ('We,are,the,world,and,great,day', '', '')

split string into characters
In: dsf3y43b4
Out: ['d', 's', 'f', '3', 'y', '4', '3', 'b', '4']

split a string into words by multiple seperates
In: One solution has been to add some: since Singapore has expanded by over one-fifth, from 58,000 hectares (224.5 square miles) to nearly 72,000, by filling in the sea with imported sand.
Out: ['One', 'solution', 'has', 'been', 'to', 'add', 'some', '', 'since', 'Singapore', 'has', 'expanded', 'by', 'over', 'one-fifth', 'from', '58000', 'hectares', '', '224.5', 'square', 'miles', '', 'to', 'nearly', '72000', 'by', 'filling', 'in', 'the', 'sea', 'with', 'imported', 'sand']

The script:
# -*- coding: utf-8 -*-
"""
Created on Thu Jul 23 09:51:16 2015

@author: yuan
"""

#use of split(), rsplit(), partition()

print '\nsplit string by delimiter'
string='We,are,the,world'
print 'In:', string
print 'Out:', string.split(',')


print '\nsplit string by one or more white space'
string='We are  the world   '
print 'In:', string
print 'Out:', string.split()


print '\nsplit string by delimiter, Split from the right, rule the splited parts.'
string='We,are,the,world,and,great,day'
print 'In:', string
print 'Out:', string.rsplit(',')
print 'Out:', string.rsplit(',',1)
print 'Out:', string.rsplit(',',3)

print '\nsplit string by the first seperate and return tuple'
print 'In:', string
print 'Out:', string.partition(',')
print 'Out:', string.partition(' ')


print '\nsplit string into characters'
string='dsf3y43b4'
print 'In:', string
print 'Out:', list(string)


print '\nsplit a string into words by multiple seperates'

import re
string='One solution has been to add some: since Singapore has expanded by over one-fifth, from 58,000 hectares (224.5 square miles) to nearly 72,000, by filling in the sea with imported sand.'
print 'In:', string
a=re.split('[\s:()]', string)
print 'Out:', map( lambda x: re.sub("\.$|,", "", x), a)