LESSON 1: IntroDUCTION 

🔹 Python is a high-level, interpreted programming language known for its readability and simplicity. 

🔹 It was created by Guido van Rossum and first released in 1991.

🔹 Python is used in a variety of domains as shown in below diagram.

🔹 In Python, indentation (spacing at the beginning of a line) is not optional. It's mandatory and part of the syntax.

🔹 Indentation replaces the need for {} to define code blocks (like in loops or conditionals).

🔹 This forces consistent, readable code.

Python Code

if x > 0:

    print("Positive")  # Must be indented

C, Java and JavaScript Code

if (x > 0) {

    printf("Positive");

}

🔹 Python doesn't require to declare data types (like int, float, String) when creating variables.

🔹 It figures out the type automatically when you assign a value (dynamic typing).

Python Code

x = 10      # Integer

name = "Ali"  # String

C or Java Code

int x = 10;

String name = "Ali";

🔹 Python statements end with a newline, not a semicolon ;.

🔹 This makes the code cleaner and easier for beginners.

Python Code

print("Hello")  # No semicolon needed

Javascript Code

console.log("Hello");

🔹 In Python, curly braces are not used. 

🔹 Code blocks are defined by indentation.

🔹 In C, Java, and JavaScript, blocks are defined using {} to open and close the scope.

Python Code

for i in range(5):

    print(i)

Java Code

for (int i = 0; i < 5; i++) {

    System.out.println(i);

}

🔹 Python codes are short and readable —fewer lines, fewer symbols, and simpler syntax.

🔹 It avoids extra words and punctuation, making programs shorter and easier to understand.

Python Code

print("Hello, World!")

Java Code

public class Main {

    public static void main(String[] args) {

        System.out.println("Hello, World!");

    }

}

Python is considered simpler because:

➊ It enforces readable structure through indentation.

➋ It avoids unnecessary syntax (no semicolons or curly braces).

➌ It removes complexity for beginners (no need to declare types).

➍ Programs are often shorter, clearer, and more focused on the logic than the syntax.

🔹 Pygame - Game Development

🔹 Flask - Web Development 

🔹 TensorFlow - Machine Learning. For more info can refer at HERE!

🔹 Scrapy - Web Scraping