WebJul 26, 2024 · You can simply use function enumerate (lst) it returns elements index_number and value. for example lst [0] = 1 the case above index_number is 0 and value is 1 so you can just use enumerate function for returning index number using if condition (returns it when the value is 3) WebJul 31, 2011 · last_occurence=len(yourlist)-yourlist[::-1].index(element)-1 just easy as that.no need to import or create a function. Share. Improve this answer. Follow answered Apr 13, 2024 at 10:09. Prabu M ... Find last index of element in list with duplicate elements python. 0. index() of last occurrence in list in python. 0.
How to get index of neighboring repeating elements within a Python list …
WebHow to count the number of repeated items in a list in Python - Python programming example code - Python programming tutorial - Actionable Python programming code. … WebWith most optimize way with respect to time and space complexity: Step-1: Start travelling the original array from last, Step-2: Once you find the given element. Step-3: Return the index = l - i -1; where l = total length of the array, i = index of the element in step-2. – ArunDhwaj IIITH. Sep 4, 2024 at 17:37. the society en streaming
python - How to find all occurrences of an element in a list
WebNov 14, 2024 · Using generator expressions and comprehensions this is pretty straightforward. First let's get all values that appear more than once in a set. x = [1.2, 2.4, 3.1, 4.0, 5.6, 6.5, 1.2, 3.1, 8.1, 23.6, 29.3] multiples = set (a for a in set (x) if x.count (a) > 1) Now, to get the indexes, we can use enumerate and a list comprehension to only ... WebDec 17, 2024 · Python is a great language for doing data analysis, primarily because of the fantastic ecosystem of data-centric python packages. Pandas is one of those packages and makes importing and analyzing data much easier.. Pandas Index.get_duplicates() function extract duplicated index elements. This function returns a sorted list of index elements … WebApr 23, 2014 · Using a dictionary to count the items in a list (8 answers) Closed 6 months ago. I am new to Python. I am trying to find a simple way of getting a count of the number of elements repeated in a list e.g. MyList = ["a", "b", "a", "c", "c", "a", "c"] Output: a: 3 b: 1 c: 3 python python-2.7 Share Follow edited Feb 24, 2024 at 8:01 galoget 712 9 15 the society episode guide