如何从 python 中的字典创建新的 json object？

Question

What is the best way to create a dict, with some attributes, from another dict, in Python?

For example, suppose I have the following dict:

dict1 = { "name": "Juan", "lastname": "Gonzalez", "swimming": "yes", "soccer": "no"}

I would like to obtain:

dict2 = { "name": "Juan", "lastname": "Gonzalez", "hobbies": {"swimming": "yes", "soccer": "no"}}

Which I only need to add the "hobbies"

Answer 1

The easy answer:

dict2 = {"name": dict1["name"], "lastname": dict1["lastname"], hobbies: {"swimming": dict1["swimming"], "soccer": dict1["socccer"]}}

A more flexible answer:

toplevel_keys = ['name', 'lastname']
hobbies_keys = ['swimming', 'soccer']
dict2 = {key: dict1[key] for key in toplevel_keys}
dict2['hobbies'] = {key: dict1[key] for key in hobbies_keys}