For 2023 - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.
Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!
I am also active in many other area and still look after a lot of web sites - you can find an index ((here))
zip in Python
Zipping has become synonymouse with compressing data in programming terms; originally the use of the word in that sense came from zipping up a bag so that a whole lot of contents were held together, but these days the compression (pushing everything into the bag) is kind of expected.
function takes us back to the older meaning - it allows two or more lists of the same length to be combined into a list of tuples, also with the same number of members.
For example, I may have two lists:
first = [4,27,46,51]
place = ["Melksham","Chippenham","Swindon","Didcot"]
and if I zip them together
togeths = zip(first,place)
[(4, 'Melksham'), (27, 'Chippenham'), (46, 'Swindon'), (51, 'Didcot')]
Image from Morguefile
- attribution not
required, but freely offered with thanks for the resource. (written 2012-07-05, updated 2012-07-14)
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articlesY111 - Python - More on Collections and Sequences 
Python is a fabulous language - (2004-09-24) 
What is a callback? - (2005-07-22) 
Copying a reference, or cloning - (2006-03-05) 
Python - extend v append on a list - (2006-10-20) 
Last elements in a Perl or Python list - (2007-08-16) 
Callbacks - a more complex code sandwich - (2007-08-19) 
Anonymous functions (lambdas) and map in Python - (2008-11-04) 
List Comprehensions in Python - (2008-11-06) 
Python - access to variables in the outer scope - (2010-04-12) 
Sorting people by their names - (2010-07-29) 
Sorting - naturally, or into a different order - (2010-08-14) 
Copying - duplicating data, or just adding a name? Perl and Python compared - (2010-10-12) 
Python dictionaries - mutable and immutable keys and values - (2011-01-29) 
List slices in Python - 2 and 3 values forms, with an uplifting example - (2011-07-06) 
Python for loops - applying a temporary second name to the same object - (2011-09-14) 
Accessing variables across subroutine boundaries - Perl, Python, Java and Tcl - (2015-01-18) 
Mutable v Immuatble objects in Python, and the implication - (2015-02-24)
Some other Articles
A year ago today, a server upgrade and a new Perl exampleFancy a weekend away? Try Well House Manor in Melksham, WiltshireRuby Documentation through rdocWhen you should use Object Orientation even in a short program - Python examplezip in PythonBackquote, backtic, str and repr in Python - conversion object to stringLike a bathroom company with no plumbersShould hotel staff sit on the toilet in the customer bedrooms?Excellent Rail News - what it really meansManaging daemons from a terminal session
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This is a page archived from The Horse's Mouth at
the diary and writings of Graham Ellis.
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