---
# System prepended metadata

title: Week Six

---

Introduction to Version Control, Git, GitHub, and Python Operators
Version Control: Why It Matters
In software development, version control is essential for managing changes to code over time. It helps teams collaborate, track history, and easily revert mistakes. Imagine working on a project alone or with others without a way to track what changed, who changed it, and why — it would quickly become chaotic.
Version control systems (VCS) solve this by recording snapshots of your code and enabling seamless collaboration.

Git: The Popular Version Control Tool
Git is a distributed version control system widely used by developers worldwide. It lets you:
    • Track changes in your code locally.
    • Create branches to work on new features safely.
    • Merge different versions.
    • Revert to previous states.
Git works on your computer via commands like:
    • git init: Start a Git repository.
    • git add: Stage changes.
    • git commit: Save changes with a message.
    • git push: Upload changes to a remote server.

GitHub: Hosting Your Code Online
GitHub is a web-based platform that hosts Git repositories online. It adds collaboration features like:
    • Pull requests (code reviews).
    • Issue tracking.
    • Project management.
    • Social coding community.
By pushing your Git repo to GitHub, you can share your work, contribute to others’ projects, and showcase your portfolio.

Python Arithmetic Operators
Arithmetic operators perform basic mathematical


|OPerator | Meaning | Example|Result|
| -------- | -------- | -------- |------|
| +     | Addition    | 5+3     |8
|_ |Subtraction|5-3|2
|* |Multiplication|5*3|15
|/|Division|5/3|1.66
|// | floor Division | 5//3 |1
|% | Modulus | 5 % 3 | 2 
|** | Exponential | 5**3 | 125

Python Assignment Operators
Assignment operators combine arithmetic and assignment to simplify code:
Operator
| OPerator | Equivalent To             | Example            |
| -------- | ------------------------- | ------------------ |
| =        | Assign                    | x = 5              |
| *=       | add and asign             | x += 3 (x = x + 3) |
| -=       | Divide and assign         | x -= 2             |
| *=       | Multiply and assign       | x *= 4             |
| +=       | Add and assign            | x += 5             |
| /=       | divide and assign         | x /= 2             |
| //= | Floor division and assign | x //=3 | 


x = 5

Add and assign


Subtract and assign




/=



Floor divide assign
x //= 
%=
Modulus assign
x %= 3
**=
Exponent assign
x **= 3

​ Conclusion
Mastering version control with Git and GitHub equips you to collaborate and manage code efficiently in real-world projects. Meanwhile, understanding arithmetic and assignment operators in Python forms a foundation for writing clean and effective programs.
