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Home/ Questions/Q 7841617
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Editorial Team
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Editorial Team
Asked: June 2, 20262026-06-02T16:08:14+00:00 2026-06-02T16:08:14+00:00

I have an attribute that I’m storing as a JSON object, like so: content

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I have an attribute that I’m storing as a JSON object, like so:

content  = ndb.JsonProperty()

When I do this, I get this error:

   line 1614, in _to_base_type
    return json.dumps(value, 2)
AttributeError: 'module' object has no attribute 'dumps'

inside the ndb model class.

As a ndb.TextProperty it works properly. Maybe I’m sending the JSON wrong, this is the JSON object I’m sending:

{posttext: "What is your earliest memory of WWII?", linkdata: ""}
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  1. Editorial Team
    Editorial Team
    2026-06-02T16:08:15+00:00Added an answer on June 2, 2026 at 4:08 pm

    Do you perhaps have a module named ‘json.py’ or a package named ‘json’ in your app? That would override the json module that ndb is trying to import. The solution is to pick a different name for that module or package.

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