[clean_nulls function] #fastapi #python

clean_nulls.py

import boltons.iterutils

# Note that in FastAPI you can use 
# https://fastapi.tiangolo.com/tutorial/response-model/#use-the-response_model_skip_defaults-parameter
# if you have instantiated a Pydantic model and not altered the defaults - the response_model_skip_defaults
# will remove all defaults (including non-None or empty string - any default will be removed.

def clean_nulls(item):
    """Clean null values in responses

    Use response_model_skip_defaults if you are returning a pydantic model that has
    null values.

    Use this if you are hand-crafting the response and want to remove nulls
    """
    return boltons.iterutils.remap(item, lambda p, k, v: v is not None and v is not "")