When it is required to filter rows with range elements, a list comprehension and the ‘all’ operator is used to determine the output.Below is a demonstration of the same −Example Live Demomy_list = [[3, 2, 4, 5, 10], [32, 12, 4, 51, 10], [12, 53, 11], [2, 3, 31, 5, 8, 7]] print("The list is :") print(my_list) i, j = 2, 5 my_result = [index for index in my_list if all(element in index for element in range(i, j + 1))] print("The result is :") print(my_result)OutputThe list is : [[3, 2, 4, 5, 10], [32, 12, 4, 51, ... Read More

When it is required to sort strings by punctuation count, a method is defined that takes a string as a parameter and uses list comprehension and ‘in’ operator to determine the result.Below is a demonstration of the same −Example Live Demofrom string import punctuation def get_punctuation_count(my_str):    return len([element for element in my_str if element in punctuation]) my_list = ["python@%^", "is", "fun!", "to@#r", "@#$learn!"] print("The list is :") print(my_list) my_list.sort(key = get_punctuation_count) print("The result is :") print(my_list)OutputThe list is : ['python@%^', 'is', 'fun!', 'to@#r', '@#$learn!'] The result is : ['is', 'fun!', 'to@#r', 'python@%^', '@#$learn!']ExplanationThe required packages ... Read More

When it is required to sort matrix by row median, a method is defined that uses the ‘median’ method to determine the result.Below is a demonstration of the same −Example Live Demofrom statistics import median def median_row(row):    return median(row) my_list = [[43, 14, 27], [13, 27, 24], [32, 56, 18], [34, 62, 55]] print("The list is :") print(my_list) my_list.sort(key = median_row) print("The result is :") print(my_list)OutputThe list is : [[43, 14, 27], [13, 27, 24], [32, 56, 18], [34, 62, 55]] The result is : [[13, 27, 24], [43, 14, 27], [32, 56, 18], [34, ... Read More

When it is required to display all the combinations of a dictionary list, a simple list comprehension and the ‘zip’ method along with the ‘product’ method are used.Below is a demonstration of the same −Example Live Demofrom itertools import product my_list_1 = ["python", "is", "fun"] my_list_2 = [24, 15] print("The first list is :") print(my_list_1) print("The second list is :") print(my_list_2) temp = product(my_list_2, repeat = len(my_list_1)) my_result = [{key : value for (key , value) in zip(my_list_1, element)} for element in temp] print("The result is :") print(my_result)OutputThe first list is : ['python', 'is', 'fun'] The ... Read More

When it is required to count average digits in a list, a simple iteration, the ‘str’ method and the ‘/’ operator is used.Below is a demonstration of the same −Example Live Demomy_list = [324, 5345, 243, 746, 432, 463, 946787] print("The list is :") print(my_list) sum_digits = 0 for ele in my_list:    sum_digits += len(str(ele))     my_result = sum_digits / len(my_list) print("The result is :") print(my_result)OutputThe list is : [324, 5345, 243, 746, 432, 463, 946787] The result is : 3.5714285714285716ExplanationA list is defined and displayed on the console.A variable is initialized to 0.The list ... Read More

When it is required to test string in character list and vice-versa, a simple ‘in’ operator and ‘join’ method are used.Below is a demonstration of the same −Example Live Demomy_string = 'python' print("The string is :") print(my_string) my_key = ['p', 'y', 't', 'h', 'o', 'n', 't', 'e', 's', 't'] print("The key is ") print(my_key) joined_list = ''.join(my_key) my_result = my_string in joined_list print("The result is :") if(my_result == True):    print("The string is present in the character list") else:    print("The string is not present in the character list")OutputThe string is : python The key is ['p', ... Read More

When it is required to test all even elements in the list for the given range, a simple iteration and the modulus operator is used.Below is a demonstration of the same −Example Live Demomy_list = [32, 12, 42, 61, 58, 60, 19, 16] print("The list is :") print(my_list) i, j = 2, 7 my_result = True for index in range(i, j + 1):    if my_list[index] % 2 :       my_result = False       break print("The result is :") if(my_result == True):    print("All The elements are in the given range") ... Read More

When it is required to sort matrix by maximum string length, a method is defined that takes a list as parameter and uses list comprehension and the ‘max’ and ‘len’ methods to determine the result.Below is a demonstration of the same −Example Live Demodef max_length(row):    return max([len(element) for element in row]) my_matrix = [['pyt', 'fun'], ['python'], ['py', 'cool'], ['py', 'ea']] print("The matrix is :") print(my_matrix ) my_matrix .sort(key=max_length) print("The result is :") print(my_matrix )OutputThe matrix is : [['pyt', 'fun'], ['python'], ['py', 'cool'], ['py', 'ea']] The result is : [['py', 'ea'], ['pyt', 'fun'], ['py', 'cool'], ['python']]ExplanationA method ... Read More

When it is required to extract row with any Boolean True, a list comprehension is used along with the ‘any’ operator.Below is a demonstration of the same −Example Live Demomy_tuple = [[False, True], [False, False], [True, False, True], [False]] print("The tuple is :") print(my_tuple) my_result = [row for row in my_tuple if any(element for element in row)] print("The result is ") print(my_result)OutputThe tuple is : [[False, True], [False, False], [True, False, True], [False]] The result is [[False, True], [True, False, True]]ExplanationA list of list is defined and displayed on the console.A list comprehension is used to check if ... Read More

When it is required to sort tuples by total digits, a method is defined that converts every element in the list to a string, and gets the length of each of these strings, and adds them up. This is displayed as result of the method.Below is a demonstration of the same −Example Live Demodef count_tuple_digits(row):    return sum([len(str(element)) for element in row]) my_tuple = [(32, 14, 65, 723), (13, 26), (12345, ), (137, 234, 314)] print("The tuple is :") print(my_tuple) my_tuple.sort(key = count_tuple_digits) print("The result is :") print(my_tuple)OutputThe tuple is : [(32, 14, 65, 723), (13, 26), ... Read More