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Name: [002] Ian Ozsvald
Member: 106 months
Authored: 181 videos
Description: I am the co-founder of ShowMeDo (see http://showmedo.com/about), author of `The Screencasting Handbook <http://thescreencastinghandbook.com>`_ and the founder of the professional screencast production company `ProCasts <http://procasts.co.uk>`_: .. image:: http://procasts.co.uk/media/procasts_sma ...

set [ID:751] (10/14)

in series: Python Beginners - Common Variables and Containers

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Sets (wikipedia) are used to hold a set of unique items - you can't have more than one of an item at once. Sets became standard datatype in Python 2.4 (before they were included but you had to import them). You can do set-like operations such as get the union or difference of two sets.

One difference to a list is that you can't index into a set - nothing has a 'position' in a set so you can't ask for e.g. the 'first' item.

I'll show you how to build up a set, use union and difference and iterate over the contents to extract the items (also I'll show that using a list comprehension).

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Thanks for the video. This is a new concept for me. Any examples of where in programming we would be likely to use sets will be very helpful.


i like the video"s and have not have commented on alot of them cause , i have been wanting to get to the next video.


Excellent..please make videos about how to build a simple invetory app with drop down list buttons and menus.

Thank you.


Good. I had never encountered set before in older languages.


Ian does it again, thanks man.


hi, just say...

why is it that while you have the set:

[1,2,3,4,5]

and you iterate over it, it returns jut

1

2

3

4


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Your video has been edited. This is an automatic post by ShowMeDo.


Your video has been edited. This is an automatic post by ShowMeDo.


Showmedo is a peer-produced video-tutorials and screencasts site for free and open-source software (FOSS)- with the exception of some club videos, the large majority are free to watch and download.

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Educating the Open-source Community With Showmedo

Although as important as the software it supports, education and documentation are relatively neglected in the Open-source world. Coders love to code, and explaining how best to use or improve the software tends to be deferred or even sidelined.

At Showmedo we believe the community can play a vital role here and also say thanks for the tools and software that make our lives easier. If you have a piece of software you love or a programming langugage you are enthusiastic about, why not make a screencast showing others how to use it? All the stuff you wish you'd been told, the tips, tricks, insights that would have saved you time and frustration.

Screencasting is easier than you think, and we're happy to help you. You can emailus for advice or just use some of the how-to screencasts on the site. This screencasting learning-pathis a good place to start.

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