Function Assignments

1. Write a program to create a function which take your name and greet you.

Solution

def greet(name):
    print('Hello,', name)
your_name = input('Enter your name : ')
greet(your_name)

1. Write a program to take two values and print the sum using function.

Solution

def add(a, b):
    print('Sum  =', (a + b))
    
a = int(input('Enter a : '))
b = int(input('Enter b : '))

add(a, b)

1. Write a Python program to print the multiplication table of a given number(using functions).

Solution

def printTable(num):
    for i in range(1, 11):
        print(f'{num} x {i} = {num * i}')

number = int(input('Enter number : '))
printTable(number)

1. Write a python program to create a function area_of_square(side) and calculate the area of square through taking input from user.

Solution

def area_of_square(side):
    print(f'Area of square of side {side} is {side ** 2}')
    
side = int(input('Enter side : '))
area_of_square(side)

1. Write a program to create a function to calculate the area of rectangle and the function must return the value.

Solution

def area_rect(length, breadth):
    return length * breadth
    
print('Area of Rectangle of length 10 and breadth 20 : ', area_rect(10, 20))

1. Write a program to receive three integers from keyboard and get their sum and product calculated through a user-defined function cal_sum_prod().

Solution

def cal_sum_prod(x, y, z):
    s = x + y + z
    p = x * y * z
    print(f'Sum of {x}, {y} and {z} is {s}')
    print(f'Sum of {x}, {y} and {z} is {p}')
    
cal_sum_prod(2, 3, 5)

1. Write a python program to find the sum of all the even numbers between the range of start and end using functions.

Solution

def sum_even_numbers(start, end):
    sum = 0
    for num in range(start, end+1):
        if num % 2 == 0:
            sum += num
    return sum

start = 1
end = 50

print("The sum of even numbers between", start, "and", end, "is", sum_even_numbers(start, end))

1. Write a python program to check if the given number is even or odd using functions.

Solution

#using return type
def check_even_odd(num):
    if num % 2 ==0:
        return True
    else:
        return False
        
print('5 is even :', check_even_odd(5))
#-------------------------------------------
#using without return type
def check_even_odd(num):
    if num % 2 == 0:
        print(num, 'is even')
    else:
        print(num, 'is odd')
check_even_odd(5)
check_even_odd(6)

1. Pangram is a sentence that uses every letter of the alphabet. Write a program that checks whether a given string is pangram or not, through a user-defined function ispangram()

Solution

def ispangram(string):
    alphaset = set('abcdefghijklmnopqrstuvwxyz')
    string_set = set(string.replace(' ', '').lower())
    if alphaset.issubset(string_set):
        print('String is Pangram')
    else:
        print('String is not pangram')
        
ispangram('The quick brown fox jumps over the lazy dog')
ispangram('Consoleflare is good place to learn data science')
ispangram('Crazy Fredrick bought many very exquisite opal jewels')

1. Write a python program to get the reverse of the string using functions.

Solution

def reverse_string(string):
    return string[::-1]
print(reverse_string('consoleflare'))

1. Write a python program that accepts a hypen-separated sequence of words as input and calls a function convert() which converts it into a hypen-separated sequence after sorting them alphabetically. For example, if the input string is 'here-come-the-dots-followed-by-dashes' then the converted string should be by-come-dashes-dots-followed-here-the

Solution

def convert(s):
    words = s.split('-')
    words.sort()
    return '-'.join(words)
print(convert('here-come-the-dots-followed-by-dashes'))

1. Write a python function to create and return a list containing tuples of the form (x, x^2, x^3) for all x between 1 and 20(both included).

Solution

def generate_list():
    lst = []
    for i in range(1, 21):
        lst.append((i, i**2, i**3))
    return lst
l = generate_list()
print(l)

1. A palindrome is a word or phrase which reads the same in both directions. Given below are some palindromic strings: deed level Malayalam Rats live on no evil star Murder for a jar of red rum

2. Write a program that defines a function ispalindrome() which checks whether a given string is a palindrome or not. Ignore spaces and case mismatch while checking for palindrome.

Solution

def ispalindrome(s):
    st = s.lower().replace(' ', '')
    return st == st[::-1]
print(ispalindrome('deed'))
print(ispalindrome('level'))
print(ispalindrome('Malayalam'))
print(ispalindrome('Rats live on no evil star'))
print(ispalindrome('Murder for a jar of red rum'))
print(ispalindrome('consoleflare'))

1. Write a program that defines a function convert() that receives a string containing a sequence of whitespace separated words and returns a string after removing all duplicate words and sorting them alphnumerically. For example if the string passed to convert() is s = 'Sakhi was a singer because her mother was a singer, and Sakhi\'s mother was a singer because her father was a singer'. then, the output should be : Sakhi Sakhi's and because father her mother singer singer, was

Solution

def convert(s):
    words = s.split()
    return ' '.join(sorted(list(set(words))))
s = input('Enter a string : ')
print(s)
print(convert(s))

1. Write a program that defines a function count_alphabets_digits() that accepts a string and calculates the number of alphabets and digits in it. It should return these values as a dictionary. Call this function for some sample strings.

Solution

def count_alphabets_digits(s):
    d = {'Digits':0, 'Alphabets':0}
    for ch in s:
        if ch.isalpha():
            d['Alphabets'] += 1
        elif ch.isdigit():
            d['Digits'] += 1
    return d
d = count_alphabets_digits('James Bond 007')
print(d)
d = count_alphabets_digits('Kholi Number 420')
print(d)

1. Write a program that defines a function called frequency() which computes the frequency of words present in a string passed to it. The frequencies should be returned in sorted order by words in the string.

Solution

def frequency(s):
    freq = {}
    for word in s.split():
        freq[word] = freq.get(word, 0) + 1
    return freq
s = input('Enter string : ')
d = frequency(s)
words = sorted(d)

for key in words:
    print(f'{key} : {d[key]}')

1. Write a Python program to find the factorial of a number using functions.

Solution

def factorial(num):
    fact = 1:
    for i in range(1, num + 1):
        fact = fact * i
        
    print(f'Factorial of {num} is {fact}')
    
factorial(5)
factorial(4)

1. Write a python program to check whether the number is prime or not using functions.

Solution

def is_prime(n):
    if n <= 1:
        return False
    for i in range(2, int(n/2)+1):
        if n % i == 0:
            return False
    return True

num = int(input("Enter a number: "))
if is_prime(num):
    print(num, "is a prime number")
else:
    print(num, "is not a prime number")

1. Write a Python program to count the number of vowels in a string.

Solution

def count_vowels(s):
    vowels = 'aeiou'
    count = 0
    for char in s:
        if char.lower() in vowels:
            count += 1
    return count

st = input("Enter a string: ")
print("Number of vowels in", st, "is", count_vowels(st))

1. Write a Python function to find the sum of the digits of a given number.

Solution

def sum_of_digits(number):
    """
    This function takes a number as input and returns the sum of its digits.
    """
    sum = 0
    while number > 0:
        digit = number % 10
        sum += digit
        number //= 10
    return sum

number = int(input('Enter Number : '))
print("The sum of digits of", number, "is", sum_of_digits(number))

1. Write a python program to take multiple number of variables but the number of arguments are not fixed they may vary and calculate the sum of those numbers. It is provided that the values passed must be numbers.

Solution

def sum_all(*args):
    """
    This function takes any number of arguments and returns their sum.
    """
    sum = 0
    for arg in args:
        sum += arg
    return sum

print(sum_all(1, 2, 3, 4, 5))  # Output: 15
print(sum_all(10, 20, 30))    # Output: 60
print(sum_all(1, 3, 5, 7))    # Output: 16

1. Write a Python program that takes a list of numbers as input and outputs the range of the list (i.e. the difference between the largest and smallest values).

Solution

def find_range(numbers):
    """
    This function takes a list of numbers as input and returns the range of the list.
    """
    min_num = min(numbers)
    max_num = max(numbers)
    return max_num - min_num

numbers = [1, 2, 3, 4, 5]
print(find_range(numbers))  # Output: 4

numbers = [-10, 0, 10, 20, 30]
print(find_range(numbers))  # Output: 40

numbers = [5, 5, 5, 5, 5]
print(find_range(numbers))  # Output: 0

1. Write a Python function that takes a list of numbers as input and returns a new list containing only the even numbers from the input list.

Solution

def even_numbers(numbers):
    """
    This function takes a list of numbers as input and returns a new list containing only the even numbers.
    """
    even_numbers_list = []
    for num in numbers:
        if num % 2 == 0:
            even_numbers_list.append(num)
    return even_numbers_list

numbers = [1, 2, 3, 4, 5, 6]
print(even_numbers(numbers))  # Output: [2, 4, 6]

numbers = [10, 15, 20, 25, 30]
print(even_numbers(numbers))  # Output: [10, 20, 30]

numbers = [7, 13, 17, 21, 25]
print(even_numbers(numbers))  # Output: []

1. Write a Python function that takes a list of strings as input and returns a new list containing only the strings that start with the letter 'A'.

Solution

def filter_strings(strings):
    """
    This function takes a list of strings as input and returns a new list containing only the strings that start with the letter 'A'.
    """
    result = []
    for s in strings:
        if s.startswith('A') or s.startswith('a'):
            result.append(s)
    return result

strings = ['Apple', 'Banana', 'Apricot', 'Cherry', 'avocado']
print(filter_strings(strings))  # Output: ['Apple', 'Apricot', 'avocado']

strings = ['Ant', 'Bat', 'Ape', 'Alligator', 'bee']
print(filter_strings(strings))  # Output: ['Ant', 'Ape', 'Alligator']

1. Write a Python function that takes a list of numbers as input and returns the average of all the numbers in the list.

Solution

def calculate_average(numbers):
    """
    This function takes a list of numbers as input and returns their average.
    """
    if len(numbers) == 0:
        return None
    return sum(numbers) / len(numbers)

numbers = [2, 4, 6, 8, 10]
print(calculate_average(numbers))  # Output: 6.0

numbers = []
print(calculate_average(numbers))  # Output: None

numbers = [3, 5, 7]
print(calculate_average(numbers))  # Output: 5.0