Python is a high-level, interpreted programming language that is easy to learn and widely used for web development, data science, AI, machine learning, automation, and more. Python’s syntax is simple, readable, and similar to English.
print("Welcome to Python!")
Welcome to Python!
Download the latest version from python.org. Choose the right installer for Windows, Mac, or Linux. Make sure to check the “Add Python to PATH” option.
print("Python Installed Successfully")
Python Installed Successfully
You can write Python programs using IDLE, PyCharm, VS Code, or online editors like Replit. IDEs provide code highlighting, auto-completion, and debugging tools.
# This is a comment
print("Using IDE")
Using IDE
The first program in any language is to print “Hello World”. It ensures your environment is working.
print("Hello World")
Hello World
Variables store data in memory. Python variables do not require explicit declaration.
name = "Avinash"
age = 20
print("Name:", name)
print("Age:", age)
Name: Avinash
Age: 20
Python supports int, float, str, bool, list, tuple, set, and dictionary.
a = 10 # int
b = 3.14 # float
c = "Python" # str
d = True # bool
print(a, b, c, d)
10 3.14 Python True
Comments explain code. Single-line with #, multi-line with triple quotes ’’’ ’’’.
# This is a comment
'''
This is a
multi-line comment
'''
print("Comments Example")
Comments Example
Use input() to get user input. By default, input is a string.
name = input("Enter your name: ")
print("Hello", name)
Enter your name: Avinash
Hello Avinash
Arithmetic (+, -, *, /, %), comparison (==, !=, >, <), logical (and, or, not).
a = 10
b = 3
print("Addition:", a + b)
print("Modulus:", a % b)
Addition: 13
Modulus: 1
Make decisions using if-else and elif statements.
age = 18
if age >= 18:
print("You can vote")
else:
print("You cannot vote")
You can vote
Repeat code using for and while loops.
for i in range(5):
print("Number:", i)
Number: 0
Number: 1
Number: 2
Number: 3
Number: 4
Store multiple ordered items. Access using index. Lists are mutable.
fruits = ["apple", "banana", "mango"]
print(fruits[1])
fruits.append("orange")
print(fruits)
banana
['apple', 'banana', 'mango', 'orange']
Store data as key-value pairs. Access values using keys.
person = {"name": "Avinash", "age": 20}
print(person["name"])
person["city"] = "Delhi"
print(person)
Avinash
{'name': 'Avinash', 'age': 20, 'city': 'Delhi'}
Functions are reusable code blocks. Can take parameters and return values.
def greet(name):
return "Hello " + name
message = greet("Avinash")
print(message)
Hello Avinash
Learn file handling, modules, OOP, exception handling, and libraries like NumPy, Pandas, Matplotlib for advanced Python.
import math
print(math.sqrt(16))
4.0
Python एक high-level, interpreted programming language है जो सीखने में आसान है और web development, data science, AI, machine learning, automation में उपयोग होती है। Python की syntax simple और English जैसी readable है।
print("Welcome to Python!")
Welcome to Python!
Python का latest version python.org से डाउनलोड करें। अपने OS के लिए सही installer चुनें। “Add Python to PATH” option जरूर check करें।
print("Python Installed Successfully")
Python Installed Successfully
Python programs IDLE, PyCharm, VS Code या online editors जैसे Replit में लिखे जा सकते हैं। IDEs code highlighting, auto-completion और debugging में मदद करते हैं।
# यह एक comment है
print("Using IDE")
Using IDE
किसी भी language में पहला program “Hello World” print करना होता है। यह check करता है कि environment सही से काम कर रहा है।
print("Hello World")
Hello World
Variables memory में data store करते हैं। Python में variables declare करने के लिए data type define करना जरूरी नहीं है।
name = "Avinash"
age = 20
print("Name:", name)
print("Age:", age)
Name: Avinash
Age: 20
Python में int, float, str, bool, list, tuple, set और dictionary data types होते हैं।
a = 10 # int
b = 3.14 # float
c = "Python" # str
d = True # bool
print(a, b, c, d)
10 3.14 Python True
Comments code को explain करने के लिए use होते हैं। Single-line comments के लिए # और multi-line comments के लिए triple quotes ’’’ ’’’ use करते हैं।
# यह एक comment है
'''
यह एक
multi-line comment है
'''
print("Comments Example")
Comments Example
User input लेने के लिए input() function use करते हैं। Default input type string होती है।
name = input("Enter your name: ")
print("Hello", name)
Enter your name: Avinash
Hello Avinash
Arithmetic (+, -, *, /, %), comparison (==, !=, >, <), logical (and, or, not) operators का उपयोग करते हैं।
a = 10
b = 3
print("Addition:", a + b)
print("Modulus:", a % b)
Addition: 13
Modulus: 1
If-else और elif का उपयोग conditions check करने के लिए किया जाता है।
age = 18
if age >= 18:
print("You can vote")
else:
print("You cannot vote")
You can vote
Code को बार-बार चलाने के लिए for और while loops का उपयोग करते हैं।
for i in range(5):
print("Number:", i)
Number: 0
Number: 1
Number: 2
Number: 3
Number: 4
List में multiple ordered items store होते हैं। Index से access करते हैं। List mutable होती है।
fruits = ["apple", "banana", "mango"]
print(fruits[1])
fruits.append("orange")
print(fruits)
banana
['apple', 'banana', 'mango', 'orange']
Dictionary data को key-value pair में store करती है। Values को key से access करते हैं।
person = {"name": "Avinash", "age": 20}
print(person["name"])
person["city"] = "Delhi"
print(person)
Avinash
{'name': 'Avinash', 'age': 20, 'city': 'Delhi'}
Functions reusable code blocks होते हैं। यह parameters ले सकते हैं और value return कर सकते हैं।
def greet(name):
return "Hello " + name
message = greet("Avinash")
print(message)
Hello Avinash
Basics के बाद file handling, modules, OOP, exception handling और libraries जैसे NumPy, Pandas, Matplotlib सीखें।
import math
print(math.sqrt(16))
4.0
Give your best in the test, stay focused, and keep learning something new every day. Believe in yourself, and let each lesson make you stronger and smarter.
