How to convert a DictProxy object into JSON serializable dict

Question

I have a DictProxy object created using multiprocessing.Manager().dict() to support concurrency. At the end of the run, I need to serialize the dict to JSON. But it's unclear how to convert the DictProxy to serializable dict object. When I tried it, I got:

TypeError: <DictProxy object, typeid 'dict' at 0x10a240ed0> is not JSON serializable

How can I fix this?

Answer 1

Hello,

Rather than using a private DictProxy method like _getvalue(), I'd prefer using a public one like copy() which returns a shallowly-copied dict.

import multiprocessing

if __name__ == '__main__':
    manager = multiprocessing.Manager()
    d = manager.dict()
    import json
    json.dumps(d.copy())

Hope this work!

Thank You!!