1) Make a pyramid of *
num_steps = int(input("Enter the number of steps for
the staircase: "))
for i in range(1, num_steps + 1):
for j in range(i):
print("*", end="")
print()
Enter the number of steps for the staircase: 5
*
* *
* * *
* * * *
* * * * *
2) Upside down number staircase
num_steps = int(input("Enter the number of steps for the
upside-down staircase: "))
for i in range(num_steps, 0, -1):
for j in range(1, i + 1):
print(j, end=" ")
print()
1 2 3 4 5
1 2 3 4
1 2 3
1 2
1
3) Alphabet staicase
num_steps = int(input("Enter the number of steps for the staircase:
"))
for i in range(1, num_steps + 1):
for j in range(ord('A'), ord('A') + i):
print(chr(j), end="")
print()
A
AB
ABC
ABCD
ABCDE
4) 1 + x + x^2 + x^3…+ x^n
x = float(input("Enter the value of x: "))
n = int(input("Enter the value of n:"))
result = 0
for i in range(n + 1):
result += x ** i
print(f"The result of the series is: {result}")
ENTER THE VALUE OF x: 2
ENTER THE VALUE OF n: 4
THE RESULT OF THE SERIES IS: 31.0
5) 1-x+x^2-x^3…+x^n
x = float(input("Enter the value of x: "))
n = int(input("Enter the value of n: "))
result = 0
for i in range(n + 1):
result += ((-1) ** i) * (x ** i)
print(f"The result of the series is: {result}")
ENTER THE VALUE OF x: 5
ENTER THE VALUE OF n: 6
THE RUSULT OF THE SERIES IS: 13021.0
6) (x^2)/2 + (x^3)/3…+
(x^n)/n
x = float(input("Enter the value of x: "))
n = int(input("Enter the value of n: "))
result = 0
for i in range(1, n + 1):
result += (x ** i) / i
print(f"The result of the series is: {result}")
ENTER THE VALUE OF x: 2
ENTER THE VALUE OF n: 3
THE RESULT OF THE SERIES IS: 6.6666666666666
7) X + (x^2)/2! + (x^3)/3!…+
(x^n)/n!
import math
x = float(input("Enter the value of x: "))
n = int(input("Enter the value of n: "))
result = 0
for i in range(1, n + 1):
result += (x ** i) / math.factorial(i)
print(f"The result of the series is: {result}")
ENTER THE VALUE OF x: 3
ENTER THE VALUE OF n: 6
THE RESULT OF THE SERIES IS: 18.41249999999998
8) Check weather the number is palindrome or
normal or armstrong
num = int(input("Enter a number: "))
if str(num) == str(num)[::-1]:
print("The number is Palindrome.")
elif num == sum(int(digit) ** len(str(num)) for digit
in str(num)):
print("The number is Armstrong.")
else:
print("The number is Normal.")
ENTER A NUMBER: 242
THE NUMBER IS PALINDROME
9)check weather number is prime or composite
num = int(input("Enter a number: "))
if num > 1:
for i in range(2, int(num ** 0.5) + 1):
if num % i == 0:
print("The number is Composite.")
break
else:
print("The number is Prime.")
elif num == 1:
print("The number is neither Prime nor
Composite.")
else:
print("Invalid input. Please enter a positive
integer greater than 1.")
ENTER A NUMBER: 4
THE NUMBER IS COMPOSITE.
9) Print fibonacci series
num_terms = int(input("Enter the number of terms in
the Fibonacci series: "))
fibonacci_series = [0, 1]
for i in range(2, num_terms):
next_term = fibonacci_series[i - 1] +
fibonacci_series[i - 2]
fibonacci_series.append(next_term)
print("Fibonacci Series:")
for term in fibonacci_series:
print(term, end=" ")
ENTER THE NUMBER OF TERMS IN THE FIBONACCI SERIES: 7
FIBONACCI SERIES: 0 1 1 2 3 5 8
11)tell the number of vowels consonants uppercase and
lowercase characters in string
input_string = input("Enter a string: ")
lowercase_count = 0
uppercase_count = 0
vowel_count = 0
consonant_count = 0
vowels = set("aeiouAEIOU")
for char in input_string:
if char.islower():
lowercase_count += 1
elif char.isupper():
uppercase_count += 1
if char.isalpha():
if char.lower() in vowels:
vowel_count += 1
else:
consonant_count += 1
print(f"Number of lowercase characters:
{lowercase_count}")
print(f"Number of uppercase characters:
{uppercase_count}")
print(f"Number of vowels: {vowel_count}")
print(f"Number of consonants: {consonant_count}")
ENTER A STRING: pgobiaaibohp
NUMBER OF LOWERCASE CHARACTERS: 12
NUMBER OF UPPERCASE CHARACTERS: 0
NUMBER OF VOWELS: 6
NUMBER OF CONSONANTS: 6
12)check is string is palindrome
input_string = input("Enter a string: ")
cleaned_string = input_string.replace(" ",
"").lower()
if cleaned_string == cleaned_string[::-1]:
print("The string is a palindrome.")
else:
print("The string is not a palindrome.")
ENTER A STRING: PHOBIAAIBOHP
The string is a palindrome.
13) enter a list and switch positions of elements
from even index to odd index
numbers = input("Enter a list of numbers separated by
spaces: ").split()
numbers = [int(num) for num in numbers]
if len(numbers) % 2 == 0:
for i in range(0, len(numbers), 2):
numbers[i], numbers[i + 1] = numbers[i + 1],
numbers[i]
print("Modified List:", numbers)
else:
print("The list should have an even number of
elements for swapping.")
ENTER A LIST OF NUMBER SEPARATED BY SPACES: 2 3 4 5 6
7 8 9
MODIFIED LIST: [3 , 2, 5, 4, 7, 6, 9, 8]
14) make a dictionary or students with roll number
name and marks and display marks of 75% above scorers
num_students = int(input("Enter the number of
students: "))
students_dict = {}
for _ in range(num_students):
roll_number = input("Enter Roll Number: ")
name = input("Enter Name: ")
marks = float(input("Enter Marks: "))
students_dict[roll_number] = {'Name': name,
'Marks': marks}
max_marks = 100.0
cutoff_percentage = 75.0
cutoff_marks = (cutoff_percentage / 100) * max_marks
print("\nStudents with Marks Above 75%:")
for roll_number, details in students_dict.items():
if details['Marks'] > cutoff_marks:
print(f"Roll Number: {roll_number}, Name:
{details['Name']}, Marks: {details['Marks']}")
ENTER THE NUMBER OF STUDENTS: 3
ENTER ROLL NUMBER: 1
ENTER NAME: BIRJU
ENTER MARKS: 23
ENTER ROLL NUMBER: 2
ENTER NAME: AKANSHA
ENTER MARKS: 79
ENTER ROLL NUMBER: 3
ENTER NAME: KURKURE
ENTER MARKS: 3
STUDENTS WITH MARKS ABOVE 75%:
ROLL NUMBER:2, NAME: AKANSHA< MARKS: 79.0
