Practice Programs: Python Class 9 Half Yearly Examination 2024
1. Reverse a Given String
s = "hello"
reversed_string = s[::-1]
print(reversed_string) # Output: "olleh"
2. Find the Largest Element in a List
lst = [1, 2, 3, 4, 5]
largest_element = max(lst)
print(largest_element) # Output: 5
3. Count the Number of Vowels in a Given String
s = "hello world"
vowels = "aeiouAEIOU"
count = 0
for char in s:
if char in vowels:
count += 1
print(count) # Output: 3
4. Check if a Given Number is Prime or Not
n = 29
is_prime = True
if n > 1:
for i in range(2, int(n**0.5) + 1):
if n % i == 0:
is_prime = False
break
else:
is_prime = False
print(is_prime) # Output: True
5. Generate the Fibonacci Sequence Up to n Terms
n = 10
a, b = 0, 1
for _ in range(n):
print(a, end=" ")
a, b = b, a + b
# Output: 0 1 1 2 3 5 8 13 21 34
6. Calculate the Sum of All Elements in a List
lst = [1, 2, 3, 4, 5]
sum_of_elements = sum(lst)
print(sum_of_elements) # Output: 15
7. Find the Factorial of a Given Number n
n = 5
factorial = 1
for i in range(1, n + 1):
factorial *= i
print(factorial) # Output: 120
8. Find the GCD (Greatest Common Divisor) of Two Numbers
a = 48
b = 18
while b:
a, b = b, a % b
print(a) # Output: 6
9. Convert a Decimal Number to Binary
n = 10
binary = bin(n)[2:]
print(binary) # Output: "1010"
10. Find the Sum of Digits of a Given Number
n = 1234
sum_of_digits = 0
while n > 0:
sum_of_digits += n % 10
n //= 10
print(sum_of_digits) # Output: 10
11. Find the Length of a Given String
s = "hello"
length_of_string = len(s)
print(length_of_string) # Output: 5
12. Check if a Given Year is a Leap Year or Not
year = 2024
is_leap_year = (year % 4 == 0 and year % 100 != 0) or (year % 400 == 0)
print(is_leap_year) # Output: True
13. Find the Second Largest Number in a List
lst = [1, 2, 3, 4, 5]
lst.sort()
second_largest = lst[-2]
print(second_largest) # Output: 4
14. Remove All Duplicates from a List
lst = [1, 2, 2, 3, 4, 4, 5]
unique_lst = []
for element in lst:
if element not in unique_lst:
unique_lst.append(element)
print(unique_lst) # Output: [1, 2, 3, 4, 5]
15. Find the Common Elements in Two Lists
lst1 = [1, 2, 3, 4, 5]
lst2 = [4, 5, 6, 7, 8]
common_elements = list(set(lst1) & set(lst2))
print(common_elements) # Output: [4, 5]
16. Check if a Given Number is an Armstrong Number
n = 153
sum_of_powers = sum(int(digit)**3 for digit in str(n))
is_armstrong = n == sum_of_powers
print(is_armstrong) # Output: True
17. Check if a Given String is a Palindrome or Not
s = "madam"
is_palindrome = s == s[::-1]
print(is_palindrome) # Output: True
18. Count the Number of Words in a Given Sentence
s = "Hello world, welcome to Python programming!"
word_count = len(s.split())
print(word_count) # Output: 6
19. Find the Sum of All Odd Numbers in a List
lst = [1, 2, 3, 4, 5]
sum_of_odd_numbers = sum(num for num in lst if num % 2 != 0)
print(sum_of_odd_numbers) # Output: 9
20. Check if a Given String is a Pangram or Not
import string
s = "The quick brown fox jumps over the lazy dog"
is_pangram = set(string.ascii_lowercase) <= set(s.lower())
print(is_pangram) # Output: True
21. Find the LCM (Least Common Multiple) of Two Numbers
a = 12
b = 15
greater = max(a, b)
while True:
if greater % a == 0 and greater % b == 0:
lcm = greater
break
greater += 1
print(lcm) # Output: 60
22. Remove All Vowels from a Given String
s = "hello world"
vowels = "aeiouAEIOU"
s_without_vowels = ''.join([char for char in s if char not in vowels])
print(s_without_vowels) # Output: "hll wrld"
23. Find the Median of a List of Numbers
lst = [1, 3, 3, 6, 7, 8, 9]
lst.sort()
n = len(lst)
if n % 2 == 0:
median = (lst[n//2 - 1] + lst[n//2]) / 2
else:
median = lst[n//2]
print(median) # Output: 6
XXXXXXXXXXXXXXXXXXXXXXXXX--------------------------XXXXXXXXXXXXXXXXXXXXXXXXX
