Merge Two CSV Files in Python: Flexible Header Field Matching

[TheCodingEnthusiast]

Title: "Merge Two CSV Files in Python: Flexible Header Field Matching"

Content:

Introduction

In this pull request, I have implemented a Python module that allows merging two CSV files, provided they share the same set of header fields. What makes this module particularly valuable is its ability to merge the files regardless of the order of the fields in the headers. This feature improves the compatibility and usability of the code significantly.

Motivation

Often, when dealing with data in CSV format, you might have multiple CSV files with the same header fields but in different orders. Merging such files can be challenging with conventional tools. This module seeks to address this issue by offering a flexible solution.

Changes Made

The key changes introduced in this pull request are:

1. Python Module: Added a new Python module, csv_merge.py, which contains the logic for merging CSV files.

2. Flexible Header Field Matching: Implemented a feature that allows merging of CSV files with differently ordered header fields. The module identifies fields by their names, not their positions.

3. Documentation: Included detailed documentation and code comments to ensure that users understand how to use the module effectively.

Usage

Here's an example of how to use the module:

from csv_merge import merge_csv

file1 = 'file1.csv'
file2 = 'file2.csv'
output_file = 'merged.csv'

merge_csv(file1, file2, output_file)

How it Works

The module works by:

1. Reading the headers of both input CSV files.
2. Identifying common field names.
3. Rearranging the fields in the second CSV file to match the order of the first file.
4. Merging the data from both files while preserving the header order of the first file.

Testing

Extensive testing has been performed to ensure the module's functionality. This includes various scenarios with different header orders and sizes. The tests demonstrate that the module successfully merges CSV files with a flexible approach to header field matching.

Conclusion

This Python module provides a solution for merging CSV files with flexible header field matching. It simplifies data integration tasks when dealing with CSV files that have the same fields but different orders. Your feedback and suggestions are welcome, and I hope this module proves to be a valuable addition to the project.

[bhargavnova]

Hi @TheCodingEnthusiast, Thank you for your contribution :), you can checkout more opened issues or you can also submit your own ideas/code.

Happy Coding!