Program Collection

Question: Write a Python program to swap the values of two variables.

x = 100
y = 200

temp = x
x = y
y = temp

print("The value of x after swapping: {}".format(x))
print("The value of y after swapping: {}".format(y))

Question: Write a Python program to circulate (rotate) the values of N integers.

no_of_terms = int(input("Enter number of values: "))

list1 = []
for val in range(no_of_terms):
    ele = int(input("Enter integer: "))
    list1.append(ele)

print("Circulating the elements of list:", list1)

for val in range(no_of_terms):
    ele = list1.pop(0)
    list1.append(ele)
    print(list1)

Question: Write a Python program to calculate the distance between two points using the distance formula.

import math

p1 = [4, 0]
p2 = [6, 6]

distance = math.sqrt(((p1[0] - p2[0]) ** 2) + ((p1[1] - p2[1]) ** 2))
print(distance)

Question: Write a Python program to print the Fibonacci number series using recursion.

def Fibonacci(number):
    if number == 0:
        return 0
    elif number == 1:
        return 1
    else:
        return Fibonacci(number - 2) + Fibonacci(number - 1)

number = int(input("Enter the Range number: "))

for n in range(number):
    print(Fibonacci(n))

Question: Write a Python program to print a symmetric number pyramid pattern.

N = int(input("Enter the value: "))

for i in range(1, N + 1):
    for k in range(N, i, -1):
        print(" ", end="")
    for j in range(1, i + 1):
        print(j, end="")
    for j in range(i - 1, 0, -1):
        print(j, end="")
    print()

Question: Write a Python program to print a right-aligned pyramid pattern using stars.

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

for i in range(1, n + 1):
    print(" " * (n - i) + "*" * i)

Question: Write a Python program to find all index positions of the element "Book" in a list.

my_list = ['Book', 'Stock Register', 'Library Management System', 'Book', 
           'Book Return Register', 'Book Availability', 'Book']

all_indexes = []

for i in range(len(my_list)):
    if my_list[i] == 'Book':
        all_indexes.append(i)

print("Original list:", my_list)
print("Indexes for element 'Book':", all_indexes)

Question: Write a Python program to create a tuple of car components and count how many times "Seat" appears.

thistuple = ("Seat", "Gear", "Horn", "RearMirror", "Seat", 
             "Headlight", "Accelerator")

x = thistuple.count("Seat")

print(x)

Question: Write a Python program to replace "Sand" with "M-Sand" in a tuple of construction materials.

x = ("Cement", "Sand", "Bricks")

y = list(x)
y[1] = "M-Sand"

x = tuple(y)

print(x)

Question: Write a Python program to repeat the elements of a tuple containing building materials.

building = ("Water", "R-Sand", "M Sand", "Bricks", "Tiles")

mytuple = building * 2

print(mytuple)

Question: Create a dictionary that stores states and their languages.

thisdict = {"Tamilnadu": "Tamil", "Andra": "Telugu", 
            "Karnataka": "Kannada", "Kerala": "Malayalam"}

print(thisdict)

Question: Write a Python program to copy a dictionary containing colour and vehicle details.

thisdict = {"Colour": "White", "Number": 1234, 
            "Rear mirror": 2, "Wheel Count": 4}

mydict = thisdict.copy()

print(mydict)

Question: Write a Python program to find common elements between two sets.

x = {"Sand", "Cement", "Bricks"}
y = {"M-Sand", "Cement", "Bricks"}

x.intersection_update(y)

print(x)

Question: Write a Python program to find the factorial of a given number.

num = int(input("Enter a number: "))
factorial = 1

if num < 0:
    print("Factorial does not exist for negative numbers")
elif num == 0:
    print("The factorial of 0 is 1")
else:
    for i in range(1, num + 1):
        factorial *= i
    print("The factorial of", num, "is", factorial)

Question: Write a Python program to find the largest number in a list.

def max_num_in_list(list):
    max_value = list[0]
    for a in list:
        if a > max_value:
            max_value = a
    return max_value

print(max_num_in_list([7, 20, -8, -25]))

Question: Write a Python program to reverse a string using slicing.

txt = "AllTheBest"[::-1]
print(txt)

Question: Write a Python program to check if a string is a palindrome.

def isPalindrome(s):
    return s == s[::-1]

s = "madam"
ans = isPalindrome(s)

if ans:
    print("Yes")
else:
    print("No")

Question: Write a Python program to copy the contents of one file into another.

with open("myfile.txt", "r") as firstfile:
    with open("myfile1.txt", "a") as secondfile:
        for line in firstfile:
            secondfile.write(line)

Question: Write a Python program to count the number of words in a string using split().

test_string = "Narasu’s Sarathy Institute of Technology"

print("The original string is: " + test_string)

res = len(test_string.split())

print("The number of words in string are: " + str(res))

Question: Write a Python program to print the longest word from a given sentence.

def largestWord(words):
    words = sorted(words, key=len)
    print(words[-1])

if __name__ == "__main__":
    s = "spread positivity and care yourself"
    l = s.split()
    largestWord(l)

Question: Write a Python program to handle divide-by-zero and invalid input errors.

try:
    num1 = int(input("Enter first number: "))
    num2 = int(input("Enter second number: "))
    result = num1 / num2
    print(result)

except ValueError:
    print("Invalid input. Please enter integers only...")

except ZeroDivisionError as e:
    print(e)

Question: Write a Python program to check whether a person is eligible to vote.

def main():
    try:
        age = int(input("Enter your age: "))
        if age >= 18:
            print("Eligible to vote")
        else:
            print("Not eligible to vote")
    except:
        print("Invalid number")

main()

Question: Write a Python program to validate a student's mark and print the appropriate grade.

try:
    marks = float(input("Enter your marks in Computer Science: "))

    if marks > 90:
        print("Grade: O")
    elif marks >= 80 and marks < 90:
        print("Grade: A+")
    elif marks >= 70 and marks < 80:
        print("Grade: A")
    elif marks >= 60 and marks < 70:
        print("Grade: B+")
    elif marks >= 50 and marks < 60:
        print("Grade: B")
    elif marks >= 40 and marks < 50:
        print("Grade: C")
    else:
        print("Grade: F")

    if marks < 0:
        raise ValueError("That is a negative number!")

except ValueError as e:
    print(e)