Module 4 – Python Functions, Modules, and Libraries

A beginner-friendly Python project demonstrating the use of functions, modules, and third-party libraries using Python 3 and VS Code.

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📌 Overview

This repository contains the final submission for Module 4 of the Python Programming course.
The project focuses on writing reusable functions, organizing code into modules, and using external Python libraries.

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✅ Tasks Covered

🔹 Task 1: Functions

• Created functions that accept parameters and return results
• Used docstrings to document functions
• Implemented default arguments and keyword arguments
• Performed mathematical operations such as:
  • Addition
  • Subtraction
  • Multiplication
  • Division
  • Power

📁 Relevant files:

• functions.py
• basic_operations.py
• math_operations.py

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🔹 Task 2: Modules

• Organized code into multiple Python modules
• Created separate files for different operations:
  • addition.py
  • multiplication.py
• Imported custom modules into a main script
• Demonstrated modular and reusable code structure

📁 Relevant files:

• addition.py
• multiplication.py
• main.py
• main_challenge.py

Why modules are important:

• Improve code readability
• Make code reusable
• Simplify maintenance
• Allow teamwork and scalability

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🔹 Task 3: Libraries

• Explored third-party Python libraries
• Used the requests library to fetch data from a public API
• Used the matplotlib library to visualize data using graphs

📁 Relevant files:

• fetch_data.py
• plot_graph.py

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📊 Example Visualization

The plot_graph.py script plots student marks using matplotlib to demonstrate basic data visualization.

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🛠 Requirements

• Python 3.x
• VS Code
• Required libraries:

  pip install requests matplotlib

▶️ How to Run

Run any script using:

python3 filename.py

Example:

python3 main.py python3 plot_graph.py

📁 Project Structure class-work/ │ ├── addition.py ├── multiplication.py ├── functions.py ├── basic_operations.py ├── math_operations.py ├── fetch_data.py ├── plot_graph.py ├── main.py ├── main_challenge.py ├── README.md └── pycache/

👨‍🎓 Author

Ian Module 4 – Python Programming