5

Question 1

Task

Answer 1

Answer and Description

Question 2

Write a function to calculate the length of a string.

Answer 2

def string_length(s):\n return len(s) @@@ Use the built-in len() function to get the length of a string.

Question 3

Write a program to check if a number is prime.

Answer 3

def is_prime(num):\n if num <= 1:\n return False\n for i in range(2, int(num**0.5) + 1):\n if num % i == 0:\n return False\n return True @@@ Use a loop to check divisibility and determine primality.

Question 4

Create a list of numbers and find the sum of all numbers.

Answer 4

numbers = [1, 2, 3, 4, 5]\nsum_numbers = sum(numbers) @@@ Use the built-in sum() function to calculate the sum of a list.

Question 5

Write a function to find the minimum value in a list.

Answer 5

def find_min(lst):\n return min(lst) @@@ Use the built-in min() function to find the minimum value in a list.

Question 6

Write a program to reverse a list.

Answer 6

lst = [1, 2, 3, 4, 5]\nreversed_lst = lst[::-1] @@@ Use slicing to reverse a list.

Question 7

Create a dictionary and iterate over its keys and values.

Answer 7

my_dict = {‘a’: 1, ‘b’: 2, ‘c’: 3}\nfor key, value in my_dict.items():\n print(key, value) @@@ Iterate over dictionary keys and values using the items() method.

Question 8

Write a function to concatenate two lists.

Answer 8

def concatenate_lists(lst1, lst2):\n return lst1 + lst2 @@@ Use the + operator to concatenate two lists.

Question 9

Write a program to print the first 10 natural numbers using a loop.

Answer 9

for i in range(1, 11):\n print(i) @@@ Use a for loop to print numbers in a range.

Question 10

Create a function to check if a number is in a given range.

Answer 10

def is_in_range(num, start, end):\n return start <= num <= end @@@ Use comparison operators to check if a number is within a range.

Question 11

Write a program to find the GCD of two numbers.

Answer 11

def gcd(a, b):\n while b:\n a, b = b, a % b\n return a @@@ Use the Euclidean algorithm to find the greatest common divisor.

Question 12

Create a class with a method that calculates the area of a rectangle.

Answer 12

class Rectangle:\n def __init__(self, width, height):\n self.width = width\n self.height = height\n def area(self):\n return self.width * self.height @@@ Define a class with an __init__ method and an area method.

Question 13

Write a function that returns the largest of three numbers.

Answer 13

def largest_of_three(a, b, c):\n return max(a, b, c) @@@ Use the built-in max() function to find the largest of three numbers.

Question 14

Write a program to convert a list of integers into a single integer.

Answer 14

lst = [1, 2, 3, 4]\nnumber = int(‘‘.join(map(str, lst))) @@@ Use join() and map() to convert a list of integers to a single integer.

Question 15

Create a function to check if a string is a pangram.

Answer 15

def is_pangram(s):\n alphabet = set(‘abcdefghijklmnopqrstuvwxyz’)\n return alphabet <= set(s.lower()) @@@ Check if all alphabet letters are present in the string.

Question 16

Write a program to merge two sorted lists into a single sorted list.

Answer 16

def merge_sorted_lists(lst1, lst2):\n return sorted(lst1 + lst2) @@@ Use the sorted() function to merge and sort two lists.

Question 17

Create a function to remove all whitespace from a string.

Answer 17

def remove_whitespace(s):\n return s.replace(‘ ‘, ‘’) @@@ Use the replace() method to remove whitespace from a string.

Question 18

Write a program to find the second smallest number in a list.

Answer 18

def second_smallest(lst):\n return sorted(lst)[1] @@@ Sort the list and return the second element.

Question 19

Create a function to count the number of vowels in a string.

Answer 19

def count_vowels(s):\n return sum(1 for char in s if char in ‘aeiouAEIOU’) @@@ Use a generator expression to count vowels in a string.

Question 20

Write a program to find the common elements in three lists.

Answer 20

def common_elements(lst1, lst2, lst3):\n return list(set(lst1) & set(lst2) & set(lst3)) @@@ Use set intersection to find common elements.

Question 21

Create a function to convert a binary number to decimal.

Answer 21

def binary_to_decimal(binary):\n return int(binary, 2) @@@ Use the int() function with base 2 to convert binary to decimal.

Question 22

Write a program to calculate the sum of digits of a number.

Answer 22

def sum_of_digits(n):\n return sum(int(digit) for digit in str(n)) @@@ Convert the number to a string and sum its digits.

Question 23

Create a function to capitalize the first and last letter of a string.

Answer 23

def capitalize_first_last(s):\n if len(s) < 2:\n return s.upper()\n return s[0].upper() + s[1:-1] + s[-1].upper() @@@ Capitalize the first and last letters of the string.

Question 24

Write a program to find the mode of a list of numbers.

Answer 24

from collections import Counter\ndef find_mode(lst):\n return Counter(lst).most_common(1)[0][0] @@@ Use collections.Counter to find the most common element.

Question 25

Create a function to flatten a nested list.

Answer 25

def flatten_list(nested_lst):\n return [item for sublist in nested_lst for item in sublist] @@@ Use a list comprehension to flatten a nested list.

Question 26

Write a program to find the intersection of two sets.

Answer 26

set1 = {1, 2, 3}\nset2 = {2, 3, 4}\nintersection = set1 & set2 @@@ Use the & operator to find the intersection of two sets.

Question 27

Create a function to check if a given year is a leap year.

Answer 27

def is_leap_year(year):\n return year % 4 == 0 and (year % 100 != 0 or year % 400 == 0) @@@ Use modulus operators to check leap year conditions.

Question 28

Write a program to count the occurrences of a substring in a string.

Answer 28

def count_substring(s, substring):\n return s.count(substring) @@@ Use the count() method to find the occurrences of a substring.

Question 29

Create a function to sort a dictionary by its values.

Answer 29

def sort_dict_by_value(d):\n return dict(sorted(d.items(), key=lambda item: item[1])) @@@ Use the sorted() function with a lambda to sort a dictionary by its values.

Question 30

Write a program to check if a list is a palindrome.

Answer 30

def is_palindrome(lst):\n return lst == lst[::-1] @@@ Compare the list with its reversed version to check if it’s a palindrome.

Question 31

Create a function to generate a random password.

Answer 31

import random\ndef generate_password(length):\n chars = ‘abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*()’\n return ‘‘.join(random.choice(chars) for _ in range(length)) @@@ Use random.choice to generate a random password.