FormRecognizer Prebuilt Invoice Currency is not JSON serializable

• FormRecognizer:
• API Version 2022-01-30
• Azure Machine Learning compute instance (linux):
• Python Version: 3.9

Describe the bug Running the invoice model with async following the example on https://github.com/Azure/azure-sdk-for-python/blob/5eb462494af1be848453f05fda0558208431e1aa/sdk/formrecognizer/azure-ai-formrecognizer/samples/v3.2-beta/async_samples/sample_analyze_invoices_async.py.

Then, I am trying to save the results as a json using the example provided in https://github.com/Azure/azure-sdk-for-python/blob/5eb462494af1be848453f05fda0558208431e1aa/sdk/formrecognizer/azure-ai-formrecognizer/samples/v3.2-beta/async_samples/sample_convert_to_and_from_dict_async.py

i.e.

# convert the received model to a dictionary
analyze_result_dict = result.to_dict()

# save the dictionary as JSON content in a JSON file, use the AzureJSONEncoder
# to help make types, such as dates, JSON serializable
# NOTE: AzureJSONEncoder is only available with azure.core>=1.18.0.
with open('data.json', 'w') as f:
    json.dump(analyze_result_dict, f, cls=AzureJSONEncoder)

However, when I do this, I get the following error [TypeError: Object of type CurrencyValue is not JSON serializable].

I tried adding a default to the json.dump json.dump(analyze_result_dict, f, indent=2, cls=AzureJSONEncoder, default=lambda x: x.__dict__) but that then broke the datetime outputs.

How are am I supposed to save the outputs of the Form Recognizer invoice model?

[catalinaperalta]

Anytime! 😃 I will close this issue now. Feel free to report new issues in the future.

[bostdiek]

Ah perfect, thank you so much for your help!

On Wed, Apr 20, 2022 at 2:30 PM catalinaperalta @.***> wrote:

Hi @bostdiek https://github.com/bostdiek, the reason there’s an error with the code above is that on the last two lines of the code there’s a wb instead of just a w to write the given string to the output file. With the wb then it’s expecting a bytes-like object and to_dict() returns a str .

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