Скачать или смотреть How to Create a List of Dictionaries from Two Unique Lists in Python

Learn how to easily convert two unique lists into a list of dictionaries in Python with steps and practical examples.
---
This video is based on the question https://stackoverflow.com/q/63506975/ asked by the user 'KalEmm' ( https://stackoverflow.com/u/9128790/ ) and on the answer https://stackoverflow.com/a/63507067/ provided by the user 'Kuldip Chaudhari' ( https://stackoverflow.com/u/12496509/ ) 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: Creating a list of dictionary from two unique list

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 Create a List of Dictionaries from Two Unique Lists in Python

Creating a structured data format from two lists is a common requirement in programming. If you're working with Python, you might encounter situations where you need to combine two unique lists into a list of dictionaries. For example, let's say you have two lists: one containing names and the other containing associated values. In this post, we'll explore how to achieve this elegantly using Python.

The Problem

You have two lists and want to create a list of dictionaries that organizes the data in a meaningful way. Given the following lists:

Names list: j = ['jack', 'davis']

Values list: d = [120, 150]

The goal is to create a new variable, my_var, that looks like this:

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

In this example, each dictionary should map the names to their respective values neatly.

The Solution

To create a list of dictionaries from the two unique lists, we can use Python's built-in functions such as zip() and list comprehension. Here’s a step-by-step breakdown of how to implement this:

Understand the Data Structure: You will need to define how the dictionaries will be structured. In our case, each dictionary will contain two keys: a for names and b for values.

Using zip(): The zip() function allows us to pair elements from both lists by creating tuples containing elements from the corresponding positions in the lists.

List Comprehension: You can use list comprehension to iterate through the zipped pairs and create dictionaries from them efficiently.

Here’s the Code Implementation:

You can achieve the desired output with the following code snippet:

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

Breakdown of the Code:

Line 1: Initializes the list of names.

Line 2: Initializes the list of values.

Line 3: Utilizes a list comprehension to create the list of dictionaries:

zip(('a', 'b'), (j[i], d[i])) creates pairs of keys and their corresponding values.

dict() converts these pairs into a dictionary.

The for i in range(min(len(j), len(d))) ensures that we don’t exceed the length of the shorter list.

Output

After running the code, you'll have a variable my_var that looks like this:

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

Conclusion

Now you have a straightforward method to convert two unique lists into a structured list of dictionaries in Python. This technique is not only efficient but also easy to read and maintain. You can adapt it to more complex data structures by adjusting the keys and values as needed. Happy coding!