Скачать или смотреть How to Replace Values in a JSON File Using Python

Discover how to efficiently `replace values` in a JSON file with Python, including handling errors and modifying values dynamically.
---
This video is based on the question https://stackoverflow.com/q/67450616/ asked by the user 'umer' ( https://stackoverflow.com/u/11350140/ ) and on the answer https://stackoverflow.com/a/67450828/ provided by the user 'dimay' ( https://stackoverflow.com/u/12213612/ ) 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 replace a value in json file using 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 Replace Values in a JSON File Using Python

JSON (JavaScript Object Notation) is a widely-used data format for storing and exchanging information. It is often used due to its lightweight nature and readability for humans and machines alike. But what happens when you need to modify some values in your JSON data? In this guide, we will explore how to easily replace values in a JSON file using Python.

The Problem at Hand

Imagine you have a JSON configuration file, and you need to change specific values to reflect updated settings. Let's say you need to replace the following in your JSON data:

Update "ServicePort" from "0008" to "0012".

Change the "PService" from "13.3.13.3" to "13.12.12.12".

Modify the "username" from "root" to "xyz".

Your initial JSON file may look like this:

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

Understanding the Initial Error

If you've attempted some Python code to modify this JSON data but encountered an error, you're not alone. The common error you might see is:

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

This error indicates that the code is treating a string as if it were a list or dictionary, leading to confusion in data referencing.

The Solution

Let’s walk through the corrected process to effectively replace values in your JSON file. Here’s how you can do it step by step.

Step 1: Read the JSON File

First, we need to load the JSON file into a Python dictionary for easier manipulation. Here’s how you can achieve this:

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

Step 2: Modify the Values

Next, we will change the necessary values based on your requirements. Here is an example of that code:

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

This code directly accesses and modifies the values of the JSON structure.

Step 3: Write Back to JSON File

Once the values are updated, the next step is to write the modified data back to the JSON file:

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

Complete Code Example

Here is the complete code implementation for your reference:

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

Conclusion

By following the steps outlined above, you can efficiently replace specific values in your JSON file using Python. This process not only handles straightforward replacements but also gives you a solid foundation for working with JSON data programmatically. Remember to handle errors judiciously to avoid issues such as the one mentioned earlier.

Feel free to reach out if you have further questions or need assistance with complex JSON manipulations. Happy coding!