How i can to move child dict to parent?

Question

I have a dict with child like this:

{
   "bookname" : "Harry Potter",
   "book_details" : {
         "amount" : 12,
         "price" : 1000,
   } 
}

I want to covert dict to below:

{
  "bookname" : "Harry Potter",
  "book_details_amount" :12,
  "book_details_price": 1000
}

As an aside, "child" is not really the correct terminology, it's a bit misleading. Anyway, have you tried anything at all? This seems like a rather straight-forward transformation. — juanpa.arrivillaga, Apr 19 '20 at 23:40
Does this answer your question? [Flatten nested dictionaries, compressing keys](https://stackoverflow.com/questions/6027558/flatten-nested-dictionaries-compressing-keys) — andreis11, Apr 20 '20 at 03:06
@andreis11 Was previously marked as duplicate with that. I think those recursive solutions are too complicated for the OP's requirement. — RoadRunner, Apr 20 '20 at 07:10

RoadRunner · Accepted Answer · 2020-04-20T02:08:56.047

For your specific dict, you can move book_details dict to the parent level like this:

d = {
   "bookname" : "Harry Potter",
   "book_details" : {
         "amount" : 12,
         "price" : 1000,
   } 
}

result = {"bookname": d["bookname"]}

for k, v in d["book_details"].items():
    result[f"book_details_{k}"] = v

print(result)

Output:

{'bookname': 'Harry Potter', 'book_details_amount': 12, 'book_details_price': 1000}

How i can to move child dict to parent?

1 Answers1