What is the purpose of "struct" and "array" modules

Matimus mccredie at gmail.com
Thu May 28 23:39:30 CEST 2009

On May 28, 11:17 am, Igor Katson <descent... at gmail.com> wrote:
> I pretty much understand what they do, but what's the case of using
> these modules by example? Is it something like pickle, to store the data
> efficiently in files?

For one it provides a mechanism for reading and writing arbitrary file
formats. For example, suppose you wanted to parse a PNG image using
python code. It is likely that that format is described in its
specification using C data structures (I've never looked at PNG format
specifically). In python you can't just read out some data and copy it
directly into a data structure. You could use the struct module

It really has nothing to do with serializing python data structures.
It is (mostly) about data formats and objects defined in other


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