readme.md

Lesson 1: Basic Syntax

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Python is like giving instructions to a robot friend.

You don't need to write complicated code. Just write simple instructions, one line at a time, and Python executes them from top to bottom.

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1. print() — Make the Robot Talk

The print() function displays text or values on the screen.

Example

print("Hello, I am learning Python")

Output

Hello, I am learning Python

Explanation:

Whatever you put inside print() is displayed on the screen.

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2. Comments — Notes for Humans

Comments are used to explain your code. Python ignores comments when running the program.

Example

# This is a comment. Python ignores this line completely.
print("This line actually runs")

Output

This line actually runs

Explanation:

• Start a comment with #.
• Comments help you remember why you wrote a piece of code.
• They make your code easier for others (and your future self) to understand.

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3. Indentation — Python's Most Important Rule

Unlike many programming languages, indentation is part of Python's syntax.

Example

if 5 > 3:
    print("Five is bigger")

Output

Five is bigger

Explanation:

The four spaces before print() tell Python that this line belongs inside the if block.

Think of it like placing a small box inside a larger box.

if
└── print()

If the indentation is incorrect, Python raises an error.

Correct

if 5 > 3:
    print("Five is bigger")

Incorrect

if 5 > 3:
print("Five is bigger")

This produces an IndentationError because the print() statement is not properly indented.

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Key Takeaways

• print() displays output on the screen.
• # creates comments that Python ignores.
• Indentation defines code blocks and is required in Python.
• Python executes code from top to bottom.

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Next Lesson: Variables and Data Types

Back to the main roadmap | Next lesson: Variables and Data Types