๐Ÿ”งWorking with Nested JSON & Custom EncodingWORKSHOP
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Step 1

Practice basic `json.dumps` and `json.loads`. Create a nested data structure representing a user profile (with nested address, list of hobbies, and optional fields set to None). Serialize it with pretty-printing and sorted keys, then deserialize it back and verify round-trip fidelity.

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