Shuffle a list of numbers
Lists and Tuples example from a Well House Consultants training course
More on Lists and Tuples [link]
Source code: shuffle.py Module: Y104
""" List manipulation example - shuffling
a list of numbers (note - Python has a shuffle
function in the random module, which you would
use if you were wantinng to shuffle in a real
from random import *
from sys import *
top = int(argv)
basehand = list(range(1,top+1)) ; # "list" only needed for Python 3
shuffle = 
""" method - get a list of the incoming values
and choose one at random. Put onto the outgoing
(shuffled) list then fill the gap with the very
last item to keep it continguous, but getting
shorter. Repeat until the incoming list is
posn = int(random()*len(basehand))
basehand[posn] = basehand[-1]
for track in shuffle:
WomanWithCat:y104 grahamellis$ python2 shuffle.py 5
WomanWithCat:y104 grahamellis$ python3 shuffle.py 5
Learn about this subject
This module and example are covered on the following public courses:
* Learning to program in Python
* Python Programming
Also available on on site courses for larger groups
Books covering this topic
Yes. We have over 700 books in our library. Books covering Python are listed here and when you've selected a relevant book we'll link you on to Amazon to order.
This example comes from our "Lists and Tuples" training module. You'll find a description of the topic and some other closely related examples on the "Lists and Tuples" module index page.
Full description of the source code
You can learn more about this example on the training courses listed on this page, on which you'll be given a full set of training notes.
Many other training modules are available for download (for limited use) from our download centre under an Open Training Notes License.
• Our Solutions centre provides a number of longer technical articles.
• Our Opentalk forum archive provides a question and answer centre.
• The Horse's mouth provides a daily tip or thought.
• Further resources are available via the resources centre.
• All of these resources can be searched through through our search engine
• And there's a global index here.
Purpose of this website
This is a sample program, class demonstration or answer from a training course. It's main purpose is to provide an after-course service to customers who have attended our public private or on site courses, but the examples are made generally available under conditions described below.
Web site author
This web site is written and maintained by Well House Consultants.
Conditions of use
Past attendees on our training courses are welcome to use individual examples in the course of their programming, but must check the examples they use to ensure that they are suitable for their job. Remember that some of our examples show you how not to do things - check in your notes. Well House Consultants take no responsibility for the suitability of these example programs to customer's needs.
This program is copyright Well House Consultants Ltd. You are forbidden from using it for running your own training courses without our prior written permission. See our page on courseware provision for more details.
Any of our images within this code may NOT be reused on a public URL without our prior permission. For Bona Fide personal use, we will often grant you permission provided that you provide a link back. Commercial use on a website will incur a license fee for each image used - details on request.
PH: 01225 708225 • FAX: 01225 793803 • EMAIL: firstname.lastname@example.org • WEB: http://www.wellho.net • SKYPE: wellho
PAGE: http://www.wellho.net/resources/ex.php • PAGE BUILT: Sun Jan 31 13:04:01 2016 • BUILD SYSTEM: WomanWithCat