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Class 12 Python Programs | CBSE Python Important Programs 2026

Author avatarby Aditi Mishra
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31 Jan 2026
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Class 12 Python Programs (CBSE) – Important Programs to Pass Exam Easily

Python programming is one of the most scoring sections in CBSE Class 12 Computer Science and Informatics Practices. Many questions in the board exam are directly based on standard Python programs practiced in school.

This article covers important Class 12 Python programs, written in an easy-to-understand format, focusing on logic, syntax, and exam pattern.

Why Python Programs Are Important for Class 12 CBSE?

  • Python programs carry high weightage in board exams

  • Many questions are repeated with small changes

  • Helps in practical exams + theory exams

  • Easy to score marks with correct logic and syntax

Exam Tip: Even partial logic can fetch marks.

Class 12 Python Syllabus (Program-Based Topics)

Unit Topics
Basics Input, Output, Variables
Control Structures if-else, loops
Data Structures List, Tuple, Dictionary
Functions User-defined functions
File Handling Text files
Database MySQL with Python
Exception Handling try-except

Important Python Programs for Class 12 (CBSE)

1. Program to Check Even or Odd Number

 
num = int(input("Enter number: ")) if num % 2 == 0: print("Even Number") else: print("Odd Number")

2. Program to Find Largest of Three Numbers

 
a = int(input("Enter first number: ")) b = int(input("Enter second number: ")) c = int(input("Enter third number: ")) if a > b and a > c: print("Largest:", a) elif b > c: print("Largest:", b) else: print("Largest:", c)

3. Program to Print Fibonacci Series

 
n = int(input("Enter terms: ")) a, b = 0, 1 for i in range(n): print(a, end=" ") a, b = b, a + b

4. Program to Check Prime Number

 
num = int(input("Enter number: ")) flag = True for i in range(2, num): if num % i == 0: flag = False break if flag: print("Prime Number") else: print("Not Prime")

5. Program Using List (Find Maximum)

 
lst = [10, 25, 8, 90, 45] print("Maximum:", max(lst))

6. Program Using Dictionary (Student Marks)

 
student = {"Amit": 85, "Neha": 92, "Rahul": 78} print(student)

Python Programs Based on Functions

 
def square(n): return n * n num = int(input("Enter number: ")) print("Square:", square(num))

File Handling Programs (Very Important)

Write Data into a File

 
f = open("data.txt", "w") f.write("Welcome to CBSE Python") f.close()

Read Data from a File

 
f = open("data.txt", "r") print(f.read()) f.close()

Exception Handling Program

 
try: a = int(input("Enter number: ")) print(10 / a) except ZeroDivisionError: print("Cannot divide by zero")

MySQL with Python (Basic Program)

 
import mysql.connector mydb = mysql.connector.connect( host="localhost", user="root", password="", database="school" ) print("Database Connected")

Mostly asked in theory or short answer form

Most Repeated Python Programs in CBSE Exams

Program Type Asked Frequently
Prime & Fibonacci ✅ Very High
File Handling ✅ Very High
List & Dictionary ✅ High
Functions ✅ High
Database Connectivity ✅ Medium

Last-Minute Python Exam Tips

  • Write proper indentation
  • Avoid spelling mistakes
  • Use meaningful variable names
  • Write comments if possible
  • Don’t skip programs you know partially

Click Here to Know More about CBSE Class 12 Computer Science Most Important Questions 2026 Details: https://dekhocampus.com/news/cbse-class-12-computer-science-most-important-questions-2026

FAQs (Frequently Asked Questions)

Yes, Python is simpler and more scoring.

Practice 5–7 programs daily for strong confidence.

Minor mistakes are allowed, but logic and structure must be correct.

Prime, Fibonacci, File Handling, Lists, Functions, and basic MySQL programs.

Aditi Mishra
By Aditi MishraContent Writer
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I’m Aditi Sharma, a passionate content writer currently pursuing my MA in English from Magadh University. With a strong command of language and a flair for storytelling, I specialize in crafting engaging articles, blogs, and creative content. My academic background enhances my ability to write well-researched, compelling, and grammatically refined pieces. I aim to create content that informs, inspires, and resonates with diverse audiences.

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