Python Cheat Sheet Part 01 - Python Basics & Syntax

Suptojit Modak

March 18, 2026 March 18, 2026

Welcome to Cyber Supto! I'm Supto, and in this Python Cheat Sheet series I will help you quickly learn Python with simple tips, examples, and practical notes. This series is designed for beginners and developers who want a quick reference while coding.

In this first part, we will cover Python basics, syntax, variables, data types, and simple operations. Think of this as the foundation for everything you will build in Python later.

What is Python?

Python is a powerful, beginner-friendly programming language used for:

Web Development
Automation
Cybersecurity Tools
Data Science
Artificial Intelligence
Software Development

Python is popular because its syntax is simple and easy to read.

Installing Python

Download Python from the official website and install it on your system.

Visit: python.org
Download the latest stable version
During installation, enable "Add Python to PATH"

Check installation:

python --version

Your First Python Program

The traditional first program is printing a message:

print("Hello, World!")

This command outputs text to the screen.

Python Comments

Comments help developers understand code.

# This is a single line comment

"""
This is
a multi-line
comment
"""

Python Variables

Variables store values.

name = "Supto"
age = 20
is_student = True

Python automatically detects the variable type.

Variable Naming Rules

Must start with a letter or underscore
Cannot start with a number
Use descriptive names
Case sensitive

Basic Data Types

Python has several built-in data types.

String – text data
Integer – whole numbers
Float – decimal numbers
Boolean – True or False

name = "Cyber Supto"
age = 20
price = 9.99
is_online = True

Type Checking

You can check a variable's type using type().

x = 10
print(type(x))

Basic Operators

Arithmetic Operators

a = 10
b = 3

print(a + b)  # addition
print(a - b)  # subtraction
print(a * b)  # multiplication
print(a / b)  # division
print(a % b)  # modulus
print(a ** b) # power

Comparison Operators

a = 5
b = 10

print(a == b)
print(a != b)
print(a > b)
print(a < b)

Logical Operators

x = True
y = False

print(x and y)
print(x or y)
print(not x)

Taking User Input

Python can take input from the user.

name = input("Enter your name: ")
print("Hello", name)

Type Conversion

Sometimes you need to convert data types.

age = input("Enter age: ")
age = int(age)

print(age + 5)

Common conversions:

int()
float()
str()
bool()

Quick Tips

Use meaningful variable names
Keep code readable
Use comments to explain logic
Practice writing small scripts daily

Next Parts of This Python Cheat Sheet

This Python Cheat Sheet series on Cyber Supto is designed to be a quick reference you can revisit anytime while learning or coding.

Thanks for reading,
Cyber Supto.

Python