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Python Articles
Page 40 of 855
Python program to Sort Strings by Punctuation count
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 −Examplefrom 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 are ...
Read MorePython – Filter Rows with Range Elements
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 −Examplemy_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, 10], ...
Read MorePython – Calculate the percentage of positive elements of the list
When it is required to calculate the percentage of positive elements of the list, a list comprehension and the ‘len’ method are used.Below is a demonstration of the same −Examplemy_list = [14, 62, -22, 13, -87, 0, -21, 81, 29, 31] print("The list is :") print(my_list) my_result = (len([element for element in my_list if element > 0]) / len(my_list)) * 100 print("The result is :") print(my_result)OutputThe list is : [14, 62, -22, 13, -87, 0, -21, 81, 29, 31] The result is : 0ExplanationA list is defined and displayed on the console.A list comprehension is used to ...
Read MorePython – Sort by Maximum digit in Element
When it is required to sort by maximum digit in element, a method is defined that uses ‘str’ and ‘max’ method to determine the result.Below is a demonstration of the same −Exampledef max_digits(element): return max(str(element)) my_list = [224, 192, 145, 18, 3721] print("The list is :") print(my_list) my_list.sort(key = max_digits) print("The result is :") print(my_list)OutputThe list is : [224, 192, 145, 18, 3721] The result is : [224, 145, 3721, 18, 192]ExplanationA method named ‘max_digits’ is defined that takes element as a parameter, and converts it into a string, and then gets the maximum of ...
Read MorePython program to sort matrix based upon sum of rows
When it is required to sort matrix based upon sum of rows, a method is defined that uses ‘sum’ method to determine the result.Below is a demonstration of the same −Exampledef sort_sum(row): return sum(row) my_list = [[34, 51], [32, 15, 67], [12, 41], [54, 36, 22]] print("The list is :") print(my_list) my_list.sort(key = sort_sum) print("The result is :") print(my_list)OutputThe list is : [[34, 51], [32, 15, 67], [12, 41], [54, 36, 22]] The result is : [[12, 41], [34, 51], [54, 36, 22], [32, 15, 67]]ExplanationA method named ‘sort_sum’ is defined that takes a list ...
Read MorePython – Combine list with other list elements
When it is required to combine list with other list elements, a simple iteration and ‘append’ method is used.Below is a demonstration of the same −Examplemy_list_1 = [12, 14, 25, 36, 15] print("The first list is :") print(my_list_1) my_list_2 = [23, 15, 47, 12, 25] print("The second list is :") print(my_list_2) for element in my_list_2 : my_list_1.append(element) print ("The result is :") print(my_list_1)OutputThe first list is : [12, 14, 25, 36, 15] The second list is : [23, 15, 47, 12, 25] The result is : [12, 14, 25, 36, 15, 23, 15, 47, ...
Read MorePython – Extract Rear K digits from Numbers
When it is required to extract rear K digits from numbers, a simple list comprehension, the modulo operator and the ‘**’ operator are used.Below is a demonstration of the same −Examplemy_list = [51645, 24567, 36743, 89452, 2122] print("The list is :") print(my_list) K = 3 print("The value of K is ") print(K) my_result = [element % (10 ** K) for element in my_list] print("The result is :") print(my_result)OutputThe list is : [51645, 24567, 36743, 89452, 2122] The value of K is 3 The result is : [645, 567, 743, 452, 122]ExplanationA list is defined and displayed ...
Read MorePython – Dual Tuple Alternate summation
When it is required to perform dual tuple alternate summation, a simple iteration and the modulus operator are used.Below is a demonstration of the same −Examplemy_list = [(24, 11), (45, 66), (53, 52), (77, 51), (31, 10)] print("The list is :") print(my_list) my_result = 0 for index in range(len(my_list)): if index % 2 == 0: my_result += my_list[index][0] else: my_result += my_list[index][1] print("The result is :") print(my_result)OutputThe list is : [(24, 11), (45, 66), (53, 52), (77, 51), (31, 10)] The result is : 225ExplanationA list of tuple ...
Read MorePython Program to extracts elements from a list with digits in increasing order
When it is required to extracts elements from a list with digits in increasing order, a simple iteration, a flag value and the ‘str’ method is used.Below is a demonstration of the same −Examplemy_list = [4578, 7327, 113, 3467, 1858] print("The list is :") print(my_list) my_result = [] for element in my_list: my_flag = True for index in range(len(str(element)) - 1): if str(element)[index + 1]
Read MorePython Program to Remove the nth Occurrence of the Given Word in a List where Words can Repeat
When it is required to remove a specific occurrence of a given word in a list of words, given that the words can be repeated, a method can be defined, that iterates through the list, and increments the counter by 1. If the count and the specific occurrence match, then the specific element from the list can be deleted.Below is a demonstration of the same −Exampledef remove_word(my_list, my_word, N): count = 0 for i in range(0, len(my_list)): if (my_list[i] == my_word): count = count + 1 if(count ...
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