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top 5 programming language

1. Python

Use: Web development, data science, artificial intelligence, automation, and more.

Why Popular: Easy to learn, versatile, vast library support, and huge community.

2. JavaScript

Use: Web development (both front-end and back-end with Node.js).

Why Popular: Essential for building interactive websites and has wide usage in both client-side and server-side programming.

3. Java

Use: Web development, mobile applications (Android), enterprise-level software.

Why Popular: Platform-independent (write once, run anywhere), stable, and widely used in large systems and apps.

4. C++

Use: System/software development, game development, performance-critical applications.

Why Popular: High performance, object-oriented programming, and control over hardware.

5. C#

Use: Game development (with Unity), enterprise software, and desktop applications.

Python basics

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1. Variables (चर):

Variables ko hum data ko store karne ke liye use karte hain.

Example:

x = 5 # x mein 5 store kar rahe hain

2. Data Types (डेटा प्रकार):

Python mein kai types ke data hote hain, jaise:

Integer (पूरा अंक):

age = 25 # integer type

Float (दशमलव अंक):

price = 19.99 # float type

String (स्ट्रिंग):

name = "Amit" # string type

Boolean (बूलियन):

is_active = True # boolean type

3. Operators (संचालक):

Python mein kuch basic operators hain, jo hum values par operations karne ke liye use karte hain:

Addition (+):

a = 10

b = 5

result = a + b # result = 15

Subtraction (-):

result = a - b # result = 5

Multiplication (*):

result = a * b # result = 50

Division (/):

result = a / b # result = 2.0

4. If Statement (यदि कथन):

if statement ko hum condition check karne ke liye use karte hain. Example:

age = 18

if age >= 18:

    print("Aap Vayask hain") # Agar age 18 ya zyada hai toh yeh print hoga

else:

    print("Aap Nabalig hain") # Agar age 18 se kam hai toh yeh print hoga

5. Loops (लूप):

Loop ka use kisi code ko baar-baar chalane ke liye hota hai.

For Loop:

for i in range(5): # yeh 0 se lekar 4 tak print karega

    print(i)

While Loop:

count = 0

while count < 5:

    print(count)

    count += 1 # count ko 1 badhate hain

6. Functions (कार्य):

Functions ka use hum code ko modular banane ke liye karte hain, taaki hum ek task ko baar-baar call kar sakein. Example:

def greet(name):

    print("Namaste, " + name)

greet("Amit") # yeh 'Namaste, Amit' print karega

7. Lists (सूची):

List ka use hum ek se adhik cheezon ko store karne ke liye karte hain. Example:

fruits = ["Apple", "Banana", "Mango"]

print(fruits[0]) # yeh "Apple" print karega

8. Dictionaries (शब्दकोश):

Dictionaries ka use key-value pairs ko store karne ke liye hota hai. Example:

person = {"name": "Amit", "age": 25}

print(person["name"]) # yeh "Amit" print karega

9. Comments (टिप्पणियाँ):

Comments ka use hum code ko samjhane ke liye karte hain, jo Python interpreter ignore karta hai. Example:

# Yeh ek comment hai

print("Hello, World!") # Yeh line screen par print karegi

10. Input (इनपुट):

User se input lene ke liye input() functi

on ka use karte hain. Example:

name = input("Apna naam daalein: ")

print("Namaste, " + name)

Python basic

 Introduction to Python Programming

Python is one of the most popular programming languages today, known for its simplicity and versatility. Whether you're a beginner or an experienced developer, Python offers a clear and concise syntax, making it easy to learn and use.

Why Learn Python?

Easy to Read and Write: Python's syntax is clean and easy to understand, which helps beginners quickly grasp programming concepts.

Versatile: Python is used in web development, data analysis, artificial intelligence, machine learning, and more.

Large Community: With a vast community, finding solutions to your coding problems is just a Google search away.

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Getting Started with Python

Before you begin, make sure Python is installed on your system. You can download it from python.org.

Hello, World!

The classic first program in any language:

print("Hello, World!")

This command prints "Hello, World!" on the screen.

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Python Basics

1. Variables and Data Types

Variables store data values. Python is dynamically typed, meaning you don’t need to declare the type of variable.

# Example

name = "John" # String

age = 25 # Integer

height = 5.9 # Float

is_student = True # Boolean

2. Conditional Statements

Use if, elif, and else for decision-making.

# Example

age = 18

if age >= 18:

    print("You are an adult.")

else:

    print("You are a minor.")

3. Loops

Python has two main types of loops: for and while.

# For loop

for i in range(5):

    print(i)

# While loop

count = 0

while count < 5:

    print(count)

    count += 1

4. Functions

Functions are blocks of reusable code.

# Example

def greet(name):

    return f"Hello, {name}!"

print(greet("Alice"))

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Practice Makes Perfect

To solidify your understanding of Python, try solving small problems, such as:

Creating a calculator

Building a to-do lis

t

Writing a program to find the factorial of a number

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