How to make boto3 responses with datetime.datetime json serializable - boto3 ec2 describe_instances or rds describe_db_instances

aws_json.py

# The file that does the voodoo magic
# Inspired by:
# - https://stackoverflow.com/questions/35869985/datetime-datetime-is-not-json-serializable
# - https://gist.github.com/jeffbrl/67eed588f2d32afcaf3bf779bd91f7a7

import json
import datetime

def pretty_print(data):
    print(json.dumps(data, default=__datetime_handler, indent=4))

def __datetime_handler(x):
    if isinstance(x, datetime.datetime):
        return x.isoformat()
    raise TypeError("Unknown Type")

describe_instances.py

import boto3
import aws_json # import anytime you know you need to parse annoying aws json

ec2 = boto3.client('ec2')
ec2_res = ec2.describe_instances()
aws_json.pretty_print(ec2_res)

rds = boto3.client('rds')
rds_res = rds.describe_db_instances()
aws_json.pretty_print(rds_res)