Day 1 of 30 Days | Python from Scratch | Tech from Scratch

Before Starting…
Welcome to Day 1! If you’re interested in learning Python from scratch, this is the perfect place to begin. Don’t worry if you’re a complete beginner — even if you’ve never touched code before, by the end of this 30-day journey, you will:

• Master Python
• Understand core tech concepts
• Build your own project!

Python

Python

What is Python?

Why we need to Learn it?

What are the opportunities we get If we Learn it ?

What is Python?

What is Python, and why should we learn it?

Before diving into Python, let’s answer a simple question: Why do we need it?

At its core, computers can only understand binary language: 0s and 1s. When we write code in Python (or any other language), it gets converted into a form the computer can understand — thanks to something called an interpreter.

Just like how humans use languages like English or Hindi to communicate, computers use languages like Python, Java, or C++. These languages act as bridges, allowing us to “talk” to computers, which only understand binary.

Since, there are Many languages why we only learn Python?

Python, specifically, is known for being easy to learn, highly versatile, and widely used in industries ranging from web development to artificial intelligence. That’s why it’s a great language to start with!

Applications and Career Opportunities If We Learn Python:

Python’s versatility allows it to be used in multiple domains. Some key areas include:

• Web Development: Build full-fledged websites using frameworks like Django and Flask.
• Data Science & Machine Learning: Analyze data, create models, and make predictions.
• Artificial Intelligence (AI): Build chatbots, recommendation systems, and AI-powered tools.
• Automation: Automate repetitive tasks, file handling, and system operations.
• Game Development: Create and prototype games using libraries like Pygame.
• Cybersecurity: Write scripts for penetration testing, malware analysis, and more.

With High End Salaries: but with some Other technologies to master along with it We can discuss it later

1. Python Developer : $80,000 — $120,000 per year

2. Data Scientist : $100,000 — $150,000 per year

3. Machine Learning Engineer : $110,000 — $160,000 per year

4. DevOps Engineer : $90,000 — $130,000 per year

5. Web Developer (Django/Flask) : $75,000 — $120,000 per year

6. Automation Engineer : $70,000 — $115,000 per year

7. Cybersecurity Analyst : $85,000 — $130,000 per year

8. Game Developer : $65,000 — $110,000 per year

These ranges can vary based on location, experience, and the specific company.

The diagram illustrates the process of how Python code interacts with the CPU through the Python interpreter, and how it is converted into machine-readable instructions.

1. Python Interpreter: The Python interpreter takes the script you write (in a file like script.py) and translates it into machine code. This is a crucial step because computers only understand binary (0s and 1s), not human-readable programming languages.
2. Script.py: This is the Python file that contains the code you have written. It is passed to the Python interpreter, which processes and converts it into machine code.
3. Machine Code Creation: Once the Python interpreter processes the script, it generates machine code, which is the low-level binary language understood by the CPU.
4. Machine Code Interpreter: This component interprets the machine code generated by the Python interpreter. It ensures the computer understands and executes the instructions effectively.
5. Human-Readable Output: After the machine code is executed, the Python interpreter converts the machine’s output into human-readable format, so the end-user can see the result of their Python script.
6. End of PID: The process completes with the final result, which is delivered as an output that humans can understand, thanks to the combination of Python and the machine’s interpreters working together.

I hope you understood the flow It’s completely fine if you do not understand the flow we will discuss it on the go

Ok, Now Let’s write our first Python Program

Now that we understand what Python is, let’s dive right into writing our first program. Don’t worry — it’s super simple. We’re going to write a classic program that prints “Hello, World!”

Here’s what you need to do:

1. Open a text editor (it is basically to run and execute the instructions).
2. Refernce text editor: python
3. Inside the file, write the following code

print("Hello World!")

and when we run it

we see the output as

Hello World!"

Congratulations on completing Day 1! 🎉 You’ve just taken the first step on your journey to mastering Python. It might seem like a small step, but it’s the foundation for everything that follows.

The beauty of coding lies in its ability to turn ideas into reality, and with Python, you have one of the most powerful tools at your fingertips. As you continue through these 30 days, you’ll see how even the most complex challenges can be broken down into simple solutions. By the end, you’ll not only understand Python, but you’ll be able to build with it!

Remember: consistency is key, so don’t miss out on Day 2 where we’ll dive deeper into Python’s core concepts. I promise you, things are about to get even more exciting!

Stay curious, keep coding, and get ready to unlock your full potential. See you tomorrow! 💻🚀