stable object serialization to text file

Máté Koch koch.mate at
Thu Jan 12 08:32:19 EST 2012

That's probably the easiest way as I don't store any binary data just strings and numbers.


On Jan 12, 2012, at 1:24 PM, Peter Otten wrote:

> Máté Koch wrote:
>> I'm developing an app which stores the data in file system database. The
>> data in my case consists of large python objects, mostly dicts, containing
>> texts and numbers. The easiest way to dump and load them would be pickle,
>> but I have a problem with it: I want to keep the data in version control,
>> and I would like to use it as efficiently as possible. Is it possible to
>> force pickle to store the otherwise unordered (e.g. dictionary) data in a
>> kind of ordered way, so that if I dump a large dict, then change 1 tiny
>> thing in it and dump again, the diff of the former and the new file will
>> be minimal?
>> If pickle is not the best choice for me, can you suggest anything else?
>> (If there isn't any solution for it so far, I will write the module of
>> course, but first I'd like to look around and make sure it hasn't been
>> created yet.)
> Have you considered json? 
> The encoder features a sort_keys flag which might help.
> -- 

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