Скачать или смотреть How to Read a JSON File in Python: Accessing Keys and Related Data

Learn how to read a JSON file in Python, find a specific key, and retrieve related data as an object. This guide will help beginners navigate JSON handling with ease.
---
This video is based on the question https://stackoverflow.com/q/62923015/ asked by the user 'Victor Menezes' ( https://stackoverflow.com/u/13660078/ ) and on the answer https://stackoverflow.com/a/63136004/ provided by the user 'Victor Menezes' ( https://stackoverflow.com/u/13660078/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How to read a json file, find a key and bring the related data as object on Python?

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Read a JSON File in Python: Accessing Keys and Related Data

If you're new to Python and diving into data manipulation, understanding how to work with JSON files can be a great asset. JSON (JavaScript Object Notation) is a widely used data format for storing and exchanging information, and Python offers excellent support for reading and writing JSON data. In this guide, we’ll tackle a common problem: how to read a JSON file, find a specific key, and retrieve related data as an object.

The Problem at Hand

Imagine you're building an application that needs to keep track of user access. You want to store and retrieve user data through a JSON file. Your JSON file might look something like this:

[[See Video to Reveal this Text or Code Snippet]]

You want to retrieve user data based on the instance_id, enabling your application to return relevant information like the state and description for user access requests.

Steps to Approach the Solution

Step 1: Writing Data to the JSON File

Before you can read data, ensure that you can write data properly into your JSON file. Here's a way to structure your write_json function to handle data correctly:

[[See Video to Reveal this Text or Code Snippet]]

Make sure when you're writing to JSON, you're properly formatting your data. Python dictionaries should be formatted correctly, and JSON should have comma-separated objects to be valid.

Step 2: Reading Data from the JSON File

Once your data is stored properly, you'll want to retrieve it. To read from the JSON file and access specific data based on the instance_id, you can utilize the following code:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Example Usage

Here's a small example demonstrating how to make a call to retrieve the state and description of a user by their instance ID:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

Working with JSON in Python may seem daunting for those new to the language, but it's an essential skill when dealing with data exchange. By following the steps outlined above, you can easily write, store, and retrieve user information based on specific keys in a JSON file. With practice, you'll find it becomes second nature to handle JSON data as you build more complex applications. Happy coding!