MemoryError using json.dumps()

Question

I would like to know which one of json.dump() or json.dumps() are the most efficient when it comes to encoding a large array to json format.

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Answer 1

You can simply replace

f.write(json.dumps(mytab,default=dthandler,indent=4))

by

json.dump(mytab, f, default=dthandler, indent=4)

This should "stream" the data into the file.