# Program 24: Reverse String
def main():
    text = input("Enter string: ")

    print("Original:", text)

    rev = text[::-1]

    print("Reversed:", rev)

main()

Enter string:  rollex


Original: rollex
Reversed: xellor

# Program 25: Palindrome String
def main():
    text = input("Enter string: ")

    rev = text[::-1]

    if text == rev:
        print("Palindrome")
    else:
        print("Not Palindrome")

main()

Enter string:  madam


Palindrome

# Program 26: String Length
def main():
    text = input("Enter string: ")

    count = 0

    for ch in text:
        count = count + 1

    print("Length is:", count)

main()

Enter string:  rubesh


Length is: 6

# Program 27: Count Words
def main():
    text = input("Enter sentence: ")

    words = text.split()

    count = 0

    for w in words:
        count += 1

    print("Total words:", count)

main()

Enter sentence:  rubesh


Total words: 1

# Program 28: Largest in List
def main():
    nums = list(map(int, input("Enter numbers: ").split()))

    largest = nums[0 …

# Program 30: Sum of List
def main():
    nums = list(map(int, input("Enter numbers: ").split()))

    total = 0

    for n in nums:
        total = total + n

    print("Sum is:", total)

main()

Enter numbers:  12


Sum is: 12

# Program 31: Average
def main():
    nums = list(map(int, input("Enter numbers: ").split()))

    total = 0 …

# Program 33: Count Odd
def main():
    nums = list(map(int, input("Enter numbers: ").split()))

    count = 0

    for n in nums:
        if n % 2 != 0:
            count += 1

    print("Odd count:", count)

main()

Enter numbers:  1 23 2 4 5 6


Odd count: 3

# Program 34: Reverse List
def main():
    nums = list …

# Program 36: Sort List
def main():
    nums = list(map(int, input("Enter numbers: ").split()))

    nums.sort()

    print("Sorted:", nums)

main()

Enter numbers:  67 89 7 8 8 9


Sorted: [7, 8, 8, 9, 67, 89]

# Program 37: Second Largest
def main():
    nums = list(map(int, input("Enter numbers: ").split()))

    nums …

# Program 39: Common Elements
def main():
    a = list(map(int, input("Enter list1: ").split()))
    b = list(map(int, input("Enter list2: ").split()))

    common = []

    for i in a:
        if i in b:
            common.append(i)

    print("Common:", common)

main()

Enter list1:  5 6 7 8 
Enter list2:  8 7 6 5 …

# Program 42: Access Value
def main():
    data = {"a": 10, "b": 20}

    key = input("Enter key: ")

    if key in data:
        print("Value:", data[key])
    else:
        print("Key not found")

main()

Enter key:  8 9 8 9 7 6


Key not found

# Program 43: Update Dictionary
def main():
    data = {"a": 10, "b …

# Program 45: Dictionary Length
def main():
    data = {"a": 1, "b": 2, "c": 3}

    count = 0

    for k in data:
        count += 1

    print("Length:", count)

main()

Length: 3

# Program 46: Loop Dictionary
def main():
    data = {"a": 10, "b": 20}

    print("Items:")

    for k in data:
        print(k, data[k])

main()

Items …

# Program 48: Sum Values
def main():
    data = {"a": 10, "b": 20, "c": 30}

    total = 0

    for v in data.values():
        total += v

    print("Sum:", total)

main()

Sum: 60

# Program 49: Copy Dictionary
def main():
    data = {"a": 1, "b": 2}

    copy_data = {}

    for k in data:
        copy_data[k] = data[k]

    print("Copy …

# Program 51: Write File
def main():
    f = open("test.txt", "w")

    f.write("Hello Python\n")
    f.write("File Writing\n")

    f.close()

    print("File written")

main()

File written

# Program 52: Read File
def main():
    f = open("test.txt", "r")

    content = f.read()

    print("Content:")
    print(content)

    f.close()

main …