Programming for GCSE Topic 6.1: Lists (Arrays) and …
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Programming for GCSE Topic 6.1: Lists (Arrays)
and For Loop
William Marsh School of Electronic Engineering and Computer Science
Queen Mary University of London
Outline
? Array in Python ? the issues ? Lists ? behaviour that is like an array
? Looping through a list
? Lists ? other behaviour ? For loops
Arrays in Python ? The Issue
? Python does not have arrays
? (A slight simplification)
? There are two alternatives
? Lists ? Dictionaries ? Both are more flexible than `ordinary' arrays
? Lists
? Simpler ? 'Array-like' behaviour
Big Idea
? A variable can have a value that combines many values. You can:
? Extract one value ? Update part of the variable
? This idea is essential for representing complex data in programs e.g.
? A song ? An image ? A map
ARRAY BEHAVIOUR OF LISTS
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