What will be the output of the following Python code snippet? Python list comprehensions are found to be faster and more user-friendly than for loops and lambda functions. It is basically used to generate a list of elements having some specific property. Here, . c) [(‘HELLO WORLD’, 11)] List Comprehensions is a very powerful tool, which creates a new list based on another list, in a single, readable line. �+�7��m�5�(��ď������gn?�~�o���Z��Zo�[����eNȦ����s�%����o%�����{�����>�_K'�Q���AvV] List comprehensions is a pythonic way of expressing a ‘For Loop’ that appends to a list in a single line of code. If: The below program prints only the vowels in a given string. Below are the examples of List Comprehensions Python: Example #1 – Removing Vowels from a Given Sentence. �Ͻ�����3���4���U �_hv�}�u7�@���H�strv� �D>�AS*cl� ����~�;���M����o��RE�O�w慅g ��@��!�{� �A�R�)���/�ww�?�H��R��ٙ%�ꏪ?�T������TH�������j��A,�����~�Vbl0K'�7�b���+��b �dL����B���u�2���u���h�ːR���BV�he����H����2�'�ҼwR$y d�]A��*ci�m���m���zT���ݺ��oe�� @�ep�[email protected] ��՗f�����%�5a�`�e{�r8|���G ���}y�Q�iA���y����A� x��aت�RX����R�]6����� ��p��v;KS9w�2t����x��ƾ�:,��֯\���M� (�ZaӲ݀�z�T�I3j�@Y��>�凲����V���L���o�E��]Pߥ(�M>�RV�a.���$N�x�^S�Uf�?�^(0B��ȹW�;U3K`��S�a��˚x(/[email protected]�y`g:��� ™@��1ah*j/x�K �Ԣ����t�0(�'fb����z�ӵ�s� "�MOi��7���hƦ�K4F[爺^��$���#|��ȟ��� ��a�V0ʠM}v����0�6Mքl��;�YP��h��/��T����wz^��Iє�(��W�YL���`^j�%3�l��F5�S�1�y�4�Pv����|a�h�)h:$Y�kGj^+��p7��K�k���L#˃5L]=Ԅ�r�����/F۾���+��y�~���^d�BL?�c����6}���Q҇͜��ޑ=���^T�A�����^t�g� c�%1NZ�=��i��ok`݂Rf����Ob����tO��( �6��[�U�niy�E��g>���!W��ˮ?��oҶ�VBcTU�?��GF�Վ��[email protected]�+L���2Z��k\h�����@����d���b#SD � d) none of the mentioned Please use list comprehensions rather than multiple loops, as a learning exercise. 103. Mastering this concept would help you in two ways: 1. d) [‘ad’, ‘ae’, ‘af’, ‘bd’, ‘be’, ‘bf’, ‘cd’, ‘ce’, ‘cf’] Which of the following is the same as list(map(lambda x: x**-1, [1, 2, 3]))? You can pass your list to the len() function to … It consists of brackets containing an expression followed by a for clause, then zero or more for or if clauses. View Answer. Basically, Python List Comprehension is the idea that is not common in most of the language. View Answer, 4. Suppose you want to take the letters in the word ‘anxiety’, and want to put them in a list. k = [print (i) for i in my_string if i not in "aeiou"] For example, let's say we need to create a list of integers which specify the length of each word in a certain sentence, but only if the word is not the word "the". Yet, this remains one of the most challenging topic for beginners. Next » This set of Python Multiple Choice Questions & Answers (MCQs) focuses on “List Comprehension”. In Python, list comprehensions are constructed like so: list_variable = … This set of Python Multiple Choice Questions & Answers (MCQs) focuses on “List Comprehension”. Comprehensions are just fancy syntax for a simple for-loop pattern. Example. c) prints all characters of my_string that aren’t vowels Moreover, Python List Comprehension make code smaller but effective. We can create lists just like mathematical statements and in one line only. List Comprehension vs For Loop in Python. All Rights Reserved. For example, in [x for x in L] , the iteration variable x overwrites any previously defined value of x and is set to the value of the last item, after the resulting list is created. c) [[‘da’, ‘db’, ‘dc’], [‘ea’, ‘eb’, ‘ec’], [‘fa’, ‘fb’, ‘fc’]] They can help make your programs easier to read and easier to maintain, once you’ve actually wrapped your head around how they work. © 2011-2020 Sanfoundry. Go to the editor. Try this one, which I needed recently: return a list of the full path to items in a directory (hint, use os.listdir() and os.path.join()) Code: def eg_for(sentence): vowels = 'aeiou' filter_list = [] for l in sentence: if l not in vowels: filter_list.append(l) return ''.join(filter_list) def eg_lc(sentence): vowels = 'aeiou' View Answer. Hence, your code will execute fasterDo you know List Comprehensions are 35% faster than FOR loop and 45… List Comprehensions For example, let's say we need to create a list of integers which specify the length of each word in a certain sentence, but only if the word is not the word "the". What are the list comprehensions in Python; What are set comprehensions and dictionary comprehensions; What are List Comprehensions? Python List Comprehension. 6. b) a list of Nones Write one line of Python that takes this list a and makes a new list that has only the even elements of this list in it. 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