How do you extract data from nested JSON structures in Python?

Extracting Data from Nested JSON Structures

Data returned from web APIs often comes in JSON format, which can be a nested structure. While accessing data from such structures may seem daunting, it can be simplified with a few key concepts.

In the provided example, the desired value, the "creationTime," is nested within a complex JSON structure. To understand the path to this value:

1. Identify the Top-Level Key: The outer layer of the JSON structure is represented by "my_json." This should contain the key to the first level of nesting.

2. Follow the Value Chain: Once you have the top-level key, follow the path to the desired value by accessing nested values. In this case, the path is:

   • "value"
   • "queryInfo"
   • "creationTime"
3. Use Square Brackets: When accessing nested dictionaries, use square brackets ("[]") to retrieve specific keys.

Putting this all together, the code to extract the "creationTime" value becomes:

<code class="python">creation_time = my_json['value']['queryInfo']['creationTime']</code>

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