GRADE XII - Assignment Booklet : Python Functions

 

CHAPTER – FUNCTIONS IN PYTHON

Assignment Booklet (P- 53) - ANSWER KEY 

Q1. Write a menu driven program to accept an integer and do the following on user's choice

1. multiplication Table

2. Factors

3. Check Prime or Composite

Write UDF for each option

Sol:

# Function to print multiplication table

def multtable(num):

    for i in range(1, 11):

        print(num, "*", i, "=", num * i)

# Function to print all factors

def factors(num):

    print("Factors of", num, "are:")

    for i in range(1, num + 1):

        if num % i == 0:

            print(i)

# Function to check prime or composite

def prime(num):

    if num < 2:

        print(num, "is neither prime nor composite.")

    else:

        for i in range(2, num // 2 + 1):

            if num % i == 0:

                print(num, "is Composite")

                break

        else:

            print(num, "is Prime")

# Main Program

num = int(input("Enter number: "))

print("\n1. Multiplication Table\n2. Factors\n3. Prime/Composite")

ch = int(input("Enter your choice: "))

if ch == 1:

    multtable(num)

elif ch == 2:

    factors(num)

elif ch == 3:

    prime(num)

else:

    print("Invalid choice.")

Q2. Write a program to define a UDF which will take a string and a character as parameters . 

The function should Count and display the number of times a character is appearing in a string.

Sol:

def count(string, ch):

    cntch = 0

    for c in string:

        if c == ch:  # check for user given character

            cntch += 1

    print("Number of times character appears:", cntch)

# Main Program

s = input("Enter string: ")

ch = input("Enter a character: ")

count(s, ch)

Q3. Write a program to define a function which takes a string as parameter. 

Count and return the number of alphabets, digits and special characters present in the string.

Sol:

def count(string):

    cnta = cntd = cntsp = 0

    for ch in string:

        if (ch >= 'a' and ch <= 'z') or (ch >= 'A' and ch <= 'Z'):

            cnta += 1

        elif ch >= '0' and ch <= '9':

            cntd += 1

        else:

            cntsp += 1

    return cnta, cntd, cntsp

# Main program

s = input("Enter string: ")

cnta, cntd, cntsp = count(s)

print("Number of alphabets:", cnta)

print("Number of digits:", cntd)

print("Number of special characters:", cntsp)

Q4.Write a program to define a UDF which takes a string as parameter . The function returns the count of all words having number of characters more than 5.

Sol:

def countword(text):

    count = 0

    for word in text.split():

        if len(word) >= 5:

            print("Word with length 5 or more:", word)

            count += 1

    return count

# Main Program

input_str = input("Enter a string: ")

print("Total words with length >= 5:", countword(input_str))

Q5. WAP to create a dictionary trainer with trainer-id as key field and name, experience, salary as value field (stored as a list). Input the trainer data from the user and assign salary on the basis of experience as follows:

Experience          Salary

>=10                      70000

<10 and >=5         50000

<5                          30000

Write a menu driven program to do the following:

i. Count the number of trainers whose experience is more than 20 years

ii. Display the details of trainer given trainer-id. 

Display appropriate message when trainer-id is not found. Write UDF for each option.

Sol:

# -*- coding: utf-8 -*-

"""

Created on Tue May 27 12:11:42 2025

@author: Kirti Hora

"""

def count(trainer):

    ctr = 0

    for tno in trainer:

        # Check if experience > 20

        if trainer[tno][1] > 20:

            ctr += 1

    print("Number of trainers with experience > 20:", ctr)

def searchid(trainer):

    tn = int(input("Enter trainer id: "))

    for tno in trainer:

        if tno == tn:

            print("Details are:")

            print("Name:", trainer[tno][0])

            print("Experience:", trainer[tno][1])

            print("Salary:", trainer[tno][2])

            break

    else:

       

        print("ID not found")

# Main Program

trainer = {}

n = int(input("Enter number of elements: "))

for i in range(n):

    tid = int(input("Enter trainer id: ")) 0

    name = input("Enter name: ") 1

    exp = int(input("Enter experience: ")) 2

    

    # Correct salary assignment conditions

    if exp >= 10:

        salary = 70000

    elif 5 < exp < 10:

        salary = 50000

    else:  # exp <= 5

        salary = 30000

    

    trainer[tid] = [name, exp, salary]

ch = int(input("1: Count trainers with experience > 20\n2: Search by ID\nEnter your choice: "))

if ch == 1:

    count(trainer)

elif ch == 2:

    searchid(trainer)

else:

    print("Wrong choice")

     X-------------------------------------X-------------------------------------------X

1. Python Program to add two number through function
def add_numbers(num1, num2):
    return num1 + num2
a = float(input("Enter first number: "))
b = float(input("Enter second number: "))
result = add_numbers(a, b)
print("The sum is:", result)
 
2. Python Program to find the Max of two numbers through function
def find_max(num1, num2):
    if num1 > num2:
        return num1
    else:
        return num2
a = float(input("Enter first number: "))
b = float(input("Enter second number: "))
maximum = find_max(a, b)
print("The maximum number is:", maximum)
 
3. Python Program to print the even numbers from a given list.
def print_even(numbers):
    for n in numbers:
        if n % 2 == 0:
            print(n)
nums = [2, 5, 8, 11, 14, 17, 20]
print_even(nums)
 
4. Python Program to check whether the number is prime or not
def is_prime(num):
    if num <= 1:
        return False
    for i in range(2, num):
        if num % i == 0:
            return False
    return True
number = int(input("Enter a number: "))
if is_prime(number):
    print(number, "is a prime number.")
else:
    print(number, "is not a prime number.")
 
5. Python Program to find sum all the numbers in a list
def sum_numbers(numbers):
    total = 0
    for num in numbers:
        total += num
    return total
nums = [1, 2, 3, 4, 5]
result = sum_numbers(nums)
print("Sum of all numbers:", result)
 
6. Python Program to reverse a string
def reverse_string(s):
    return s[::-1]
string = input("Enter a string: ")
reversed_str = reverse_string(string)
print("Reversed string:", reversed_str)
 
7. Python Program to checks whether a passed string is palindrome or not
def is_palindrome(s):
    return s == s[::-1]
string = input("Enter a string: ")
if is_palindrome(string):
    print(f'"{string}" is a palindrome.')
else:
    print(f'"{string}" is not a palindrome.')
 
8. Python program that takes a list and returns a new list with unique elements of the first list
def unique_elements(lst):
    unique_list = []
    for item in lst:
        if item not in unique_list:
            unique_list.append(item)
    return unique_list
 
my_list = [1, 2, 2, 3, 4, 4, 5, 1]
result = unique_elements(my_list)
print("Unique elements:", result)
 
9. Python program to find the factorial of a given number
def factorial(n):
    result = 1
    for i in range(1, n + 1):
        result *= i
    return result
num = int(input("Enter a number: "))
if num < 0:
    print("Factorial is not defined for negative numbers.")
else:
    print(f"Factorial of {num} is {factorial(num)}")
 
10.  Write a function in Python, which accepts an integer list as parameters and rearranges the list in reverse. Eg. If a list of nine elements initially contains the elements as  4, 2, 5, 1, 6, 7, 8, 12, 10. Then the function should rearrange the list as  10,12, 8, 7, 6, 1, 5,  2,  4
def reverse_list(lst):
    lst.reverse()
numbers = [4, 2, 5, 1, 6, 7, 8, 12, 10]
reverse_list(numbers)
print("Reversed list:", numbers)
 
11. Write a function called one_away that takes two strings and returns True if the strings are of the same length and differ in exactly one letter, like bike/hike or water/wafer.
def one_away(str1, str2):
    if len(str1) != len(str2):
        return False
  
 diff_count = 0
    for i in range(len(str1)):
        if str1[i] != str2[i]:
            diff_count += 1
            if diff_count > 1:
                return False        
    return diff_count == 1
print(one_away("bike", "hike"))   # True
print(one_away("water", "wafer")) # True
print(one_away("hello", "hallo")) # True
print(one_away("test", "tent"))   # True
print(one_away("test", "toast"))  # False
 
12. Write a function called change_case that given a string, returns a string with each upper case letter replaced by a lower case letter and vice-versa.
def change_case(s):
    result = ""
    for char in s:
        if char.isupper():
            result += char.lower()
        elif char.islower():
            result += char.upper()
        else:
            result += char 
    return result
input_str = "Hello World!"
print(change_case(input_str)) 
 
13. Write a definition of a method COUNTNOW(PLACES) to find and display those place names, in which there are more than 5 characters.                                            
For example: If the list PLACES contains
["DELHI", "LONDON", "PARIS", "NEW YORK", "DUBAI"]
The following should get displayed:
LONDON
NEW YORK
def COUNTNOW(PLACES):
    for place in PLACES:
        if len(place) > 5:
            print(place)
PLACES = ["DELHI", "LONDON", "PARIS", "NEW YORK", "DUBAI"]
COUNTNOW(PLACES)
 
14. Write the definition of a method ZeroEnding(SCORES) to add all those values in the list of SCORES, which are ending with zero (0) and display the sum. For example: if the SCORES contain [200, 456, 300, 100, 234, 678]. The sum should be displayed as 600
def ZeroEnding(SCORES):
    total = 0
    for score in SCORES:
        if str(score).endswith('0'):
            total += score
    print(total)
SCORES = [200, 456, 300, 100, 234, 678]
ZeroEnding(SCORES)  # Output: 600

15. Write a Python program with the following two functions:

1. calcsal(basic_salary)
   This function should take the basic salary as a parameter and do the following:
• Calculate deduction as 5.5% of the basic salary
• Calculate allowance as 12% of the basic salary
• Calculate net salary as:
  net_salary = basic_salary + allowance - deduction
• Return the calculated net salary
2. calcdesig(net_salary)
   This function should take the net salary as a parameter and assign a designation based on the following conditions:
• If net salary is greater than 100000, the designation is "Manager"
• If net salary is between 50000 (inclusive) and 100000 (inclusive), the designation is "Executive"
• If net salary is less than 50000, the designation is "Non-executive"
• Return the assigned designation

Write code to:

• Accept the basic salary from the user
• Call the calcsal() function to compute the net salary
• Call the calcdesig() function to determine the designation

Display the net salary and designation

Sol:

def calcdesig(net):

    if net >= 100000:

        desig = "Manager"

    elif net >= 50000:

        desig = "Executive"

    else:

        desig = "NonExecutive"

    return desig

def calcsal(basic):

    d = 5.5 / 100 * basic

    allw = 0.12 * basic

    net = basic + allw - d

    print("Net Salary =", net)

    print("Designation =", calcdesig(net))

# Main program

basic = float(input("Enter basic salary: "))

calcsal(basic)

16. Question:

Write a Python program that defines a function named checkchar(). This function should:

• Take a single character as a parameter.
• Check whether the character is:
• an Alphabet (A-Z or a-z)
• a Digit (0-9)
• a Special Character (any character that is not an alphabet or digit)
• Print an appropriate message indicating the type of the character.

The program should:

• Accept a character input from the user.
• Call the checkchar() function with the input character.

Example Output:

Enter a character: @

@ is a Special Character

Let me know if you'd like the sample code too.

Sol:

def checkchar(ch):

    if ch >= "0" and ch <= "9":

        res = "Digit"

    elif (ch >= "a" and ch <= "z") or (ch >= "A" and ch <= "Z"):

        res = "Alphabet"

    else:

        res = "Special Character"

    return res

# Main program

ch = input("Enter a character: ")

# Optional: Check if only one character was entered

if len(ch) == 1:

    print(checkchar(ch))

else:

    print("Please enter only a single character.")

17. Write a program using UDF which takes x and n as parameters and calculates x to the power of n.

Sol:

def power(x, n):

    prod = 1

    for i in range(1, n + 1):

        prod *= x

    print("x to the power of n =", prod)

# Main program

n = int(input("Enter n value: "))

x = int(input("Enter x value: "))

power(x, n)