Скачать или смотреть Creating a Dictionary from a TXT File in Python: Key Year and Value List

Learn how to create a structured dictionary from a TXT file in Python, using years as keys and lists of column sums as values. Perfect for beginners seeking practical coding skills!
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Creating a Dictionary from a TXT File in Python

When working with data stored in text files, it can be quite useful to extract and organize information into structures that allow for easy access and manipulation. In this post, we’ll walk through the process of creating a dictionary from a TXT file, where the keys are years and the values are lists containing sums of specified columns.

Problem Overview

You have a text file containing data with several lines, each representing a different astronomical entity within a given year. The layout appears as follows:

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

Requirements

You want to read this data from the file and produce a dictionary:

Key: The year (e.g., 2014, 2015)

Value: A list containing the sums of:

The third column

The fourth column

Solution Approach

Let’s break down the solution into digestible steps. We will demonstrate two methods; the first will utilize basic Python features, while the second will leverage the pandas library to simplify data manipulation.

Method 1: Using Basic Python

We can achieve this without any external libraries by directly reading the file and processing the lines.

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

Method 2: Using pandas

For those who prefer using libraries, pandas provides a straightforward method to handle data in tabular form. Here’s how you can implement it:

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

Example Output

Using either method will yield results similar to the following when using the example data provided:

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

Conclusion

This guide demonstrated how to create a dictionary from a text file in Python effectively. Whether you used simple file handling or advanced data manipulation with pandas, you now have a robust method for organizing your text data into a structured format. Happy coding!