Dump() Missing 1 Required Positional Argument: 'Fp' in Python Json

I am trying to prettify the json format but i am getting this error:

import requests as tt
from bs4 import BeautifulSoup
import json

get_url=tt.get("")
soup=BeautifulSoup(get_url.text,"html.parser")

select_css=soup.select("script#jsInit1")[0]
for i in select_css:
    print(json.dump(json.loads(i),indent=4,sort_keys=True))

Basically i want to extract this type of element :

'orig': {'width': 1080, 'url': '', 'height': 1349},

I know i can do this with

select_css.get('orig').get('url')

But i am not sure is this json element is nested element under any element ? That's why i am trying to prettify to get idea.