Python Introduction
What is Python? Why learn it? How to get started.
What is Python?
Python is a popular, high-level programming language created by Guido van Rossum and released in 1991. It is known for its simple, readable syntax that looks almost like plain English.
Python can be used for:
- Web development (Django, Flask)
- Data Science and Machine Learning (Pandas, TensorFlow)
- Automation and scripting
- Software and game development
- Databases and backend services
💡 Why Python?
Python works on different platforms (Windows, Mac, Linux) and has a simple, beginner-friendly syntax. It is the #1 most popular language for data science and AI.
Python Syntax vs Other Languages
Python was designed for readability. Compare printing "Hello, World!" in Python versus Java:
🐍 Python
print("Hello, World!")
☕ Java (for comparison)
public class Main {
public static void main(String[] args) {
System.out.println("Hello, World!");
}
}
Python gets the same result with just one line.
Your First Python Program
Let's write a simple Python program. Click ▶ Try it to run it live:
Example — Hello World
print("Hello, World!")
print("Welcome to Code With Raman!")
print("Python is awesome!")
Python Comments
Comments start with # and are ignored by Python. Use them to explain your code:
Example — Comments
# This is a comment
print("Hello!") # This prints a greeting
# You can have
# multi-line comments
# like this
print("Comments help explain code")
📝 Note
Python does not have a dedicated multi-line comment syntax. You can use
# on each line, or use triple quotes """...""" as a workaround.
Python Indentation
Indentation (spaces at the beginning of a line) is very important in Python. It defines code blocks, unlike other languages that use {} braces.
Example — Indentation
if 5 > 3:
print("Five is greater than three!")
print("This is inside the if block")
print("This is outside the if block")