Interactive Demo

Try the nestedutils library directly in your browser! This page uses Pyodide to run Python in the browser.

Installed package: nestedutils

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Data Source

Select an example or edit the JSON directly. Valid JSON is automatically applied when you stop typing.

Example 1: User Profile Example 2: E-commerce Data Example 3: API Response Custom JSON

1. Get Value (get_at)

Retrieve a value from the nested data structure using dot notation:

Get Value

2. Set Value (set_at)

Set a value in the nested data structure. Missing containers will be created automatically:

auto none dict list Set Value

Fill Strategy: auto (smart defaults), none (fill gaps with None), dict (always create dicts), list (always create lists)

3. Check Existence (exists_at)

Check if a path exists in the nested data structure:

Check

4. Delete Value (delete_at)

Delete a value from the nested data structure:

Allow list mutation Delete