Python issues

Add division.py with input validation for zero denominator

## Description This PR adds a new `maths/division.py` file with a `divide_numbers()` function that includes explicit input validation for zero denominators. This addresses issue #13845. ## Changes - Created `maths/division.py`...

kelvinwaringa

awaiting reviews

tests are failing

Improve Test Coverage and Documentation for Machine Learning Algorithms

### Feature description ### Feature Description The `machine_learning/` directory contains several ML algorithm implementations (K-means, Linear Regression, Decision Trees, etc.), but many of these files have limited test coverage, incomplete...

vivekkumarrathour

enhancement

Add Rabin-Karp String Matching Algorithm

### Feature description ### Feature Description The repository has several string matching algorithms (KMP, Boyer-Moore, Naive Search) but is missing the **Rabin-Karp algorithm**, which is an important string matching algorithm...

vivekkumarrathour

enhancement

Add A* (A-Star) Pathfinding Algorithm Implementation

1

### Feature description ### Feature Description The repository currently contains various graph traversal algorithms (BFS, DFS, Dijkstra) but lacks the A* (A-Star) pathfinding algorithm, which is one of the most...

vivekkumarrathour

enhancement

fix(dda): fix docstring #enhancement 13905

### Describe your change: i have given more description about the DDA algorithm so that it is easier for the beginner to understand

Ranjita1708

awaiting reviews

feat(boolean_algebra): add half adder Implementation

1

### Describe your change: * [x] Add an algorithm? ### Checklist: * [x] I have read [CONTRIBUTING.md](https://github.com/TheAlgorithms/Python/blob/master/CONTRIBUTING.md). * [x] This pull request is all my own work -- I have...

Ranjita1708

awaiting reviews

tests are failing

require descriptive names