Скачать или смотреть How to Iterate Through Dictionary Values in Python: An Easy Guide

Discover a simple method to iterate through dictionary values in Python, focusing on extracting values based on specific dictionary keys.
---
This video is based on the question https://stackoverflow.com/q/66181805/ asked by the user 'Jim Ryan' ( https://stackoverflow.com/u/11365546/ ) and on the answer https://stackoverflow.com/a/66185002/ provided by the user 'JackTheCrab' ( https://stackoverflow.com/u/7009714/ ) 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: python - how to iterate through values of dict

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.
---
Introduction

Dealing with dictionaries in Python can sometimes be tricky, especially when you're trying to extract or manipulate their values based on specific keys. If you're a beginner tackling this problem, you're not alone! Many find it a bit overwhelming at first. In this post, we'll explore how to iterate through a dictionary's values to find and output specific data based on the keys you're interested in.

The Problem

Consider the following dictionary structure:

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

The challenge here is to iterate through this dictionary to find values that are connected to specific keys ('6', '4', and '13'). Additionally, the values are currently strings, which adds a layer of complexity. The objective is to transform this data into a new dictionary that excludes certain keys and aggregates the values in a specific format.

Expected Output

Your desired output looks like this:

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

The Solution

To achieve this, we can break down the solution into organized steps. Here's how:

Step 1: Prepare Your Data

First, you need to ensure that the values in your dictionary are usable. Since the values are strings of numbers, it's best to convert them into lists of integers for easier manipulation.

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

Step 2: Iterate Through the Dictionary

Next, you'll want to iterate through your dictionary and check if your desired keys ('6', '4', '13') are present in the values of other keys. If they are, you'll collect the appropriate values.

Here's an example code snippet:

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

Step 3: Review the Output

Finally, after running the above code, you would generate dict_out, which should be organized as you expected it to be:

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

Important Note

As highlighted, the original values in your dictionary were strings. If converting to a list of integers doesn't work for your data structure, make sure to adapt the input format accordingly.

Conclusion

While the task of iterating through dictionary values in Python can seem daunting, breaking it down into smaller steps can help you grasp the process better. Remember to verify your input data, utilize loops wisely, and test your code thoroughly. With practice, you'll find this process to be straightforward and rewarding. Happy coding!