Fix Python – Pickle or json?


Asked By – Juanjo Conti

I need to save to disk a little dict object whose keys are of the type str and values are ints and then recover it. Something like this:

{'juanjo': 2, 'pedro':99, 'other': 333}

What is the best option and why? Serialize it with pickle or with simplejson?

I am using Python 2.6.

Now we will see solution for issue: Pickle or json?


If you do not have any interoperability requirements (e.g. you are just going to use the data with Python) and a binary format is fine, go with cPickle which gives you really fast Python object serialization.

If you want interoperability or you want a text format to store your data, go with JSON (or some other appropriate format depending on your constraints).

This question is answered By – Håvard S

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