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Re: What sort of data structure to use?

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  Re: What sort of data structure to use? Cameron Simpson <cs@zip.com.au> - 2015-06-03 19:24 +1000

#91935 — Re: What sort of data structure to use?

On 03Jun2015 08:19, David Aldrich <David.Aldrich@EMEA.NEC.COM> wrote:
>I have written a Python utility that performs a certain activity on some predefined sets of files.  Here is the outline of what I have written:
>
># File Set A
>pathA = 'pathA'
>fileListA = ['fileA1.txt', 'fileA2.txt']
>
># File Set B
>pathB = 'pathB'
>fileListB = ['fileB1.txt', 'fileB2.txt', 'fileB3.txt']
>
>myFunc1(pathA, fileListA)
>myFunc2(pathA, fileListA)
>
>myFunc1(pathB, fileListB)
>myFunc2(pathB, fileListB)
>
>I want to add more file sets, so I really want to add the sets to a list and iterate over the list, calling myFunc1 & myFunc2 for each item.
>
>My question is: what sort of data structure could I use to organise this, given that I want to associate a set of files with each path and that, for each set, there is an arbitrary number of files?

Based on your description I would use a dict keyed on the path, whose values 
were a set of files. A set is a preprovided data type in Python. Look it up and 
use it.

There are other alternatives, but that would be a first attempt.

Cheers,
Cameron Simpson <cs@zip.com.au>

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