Build JSON object in python similar to Java script

Question

AWS API gateway requires request template of type application/json, as shown above, AWS Gateway will parse and pass these values to AWS lambda. This should be created by python boto3. Structure is something similar to JSON structure in Java script

{
"userName":$input.json('$.userName'),
"password":$input.json('$.password'),
}

But in python we can't build a dictionary to have a value $input.json, it should be a string or bool or any other object — santosh
– santosh, Commented Apr 22, 2020 at 9:02
Yes, this will be used in AWS API gateway request template which is of type application/json and this needs to be created through python — santosh
– santosh, Commented Apr 22, 2020 at 9:09
How are you supposed to pass user name and password? It's not really clear what the use case is. — NomadMonad
– NomadMonad, Commented Apr 22, 2020 at 9:14

MatsLindh · Accepted Answer · 2020-04-22 09:02:17Z

1

You can use the json module to create JSON from internal python structures:

import json

data = {'username': '....', 'password': '....'}
print(json.dumps(data))

If you don't need to export it as a JSON structure, you can use the dictionary directly:

data = {'username': '....', 'password': '....'}
print(data['username'])

answered Apr 22, 2020 at 9:02

MatsLindh

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4 Comments

santosh Over a year ago

Value should not be enclosed with quotes as detailed in my question

MatsLindh Over a year ago

They'll have to be, unless they're references to variables. If you have variables defined, then you can refer them directly. If you have a different need, you'll have to clarify that in your question.

santosh Over a year ago

Actually in AWS API gateway we need to add request template, as shown above, API Gateway will parse and pass these values to AWS lambda, this request template should be of application/json and should be created by python boto3

MatsLindh Over a year ago

I think you're going to have to build that manually in that case, by iterating over the dictionary and output a JSON-like structure for each variable reference. Add these details to your question - it's impossible to tell that this is what you want from the question.

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