Sep 19, 2018 · I have a piece of code here that is supposed to return the least common element in a list of elements, ordered by commonality: def getSingle(arr): from collections import Counter …

Jun 14, 2019 · Downvoted because I feel the core of this answer is incorrect. Getting a list when you want an element only postpones the inevitable "list index out of range" - and that's what …

Nov 2, 2010 · When reading, list is a reference to the original list, and list[:] shallow-copies the list. When assigning, list (re)binds the name and list[:] slice-assigns, replacing what was previously …

Being somewhat new to the Java language I'm trying to familiarize myself with all the ways (or at least the non-pathological ones) that one might iterate through a list (or perhaps other collection...

Jan 27, 2012 · It slices x[startAt:endBefore:skip] if you use skip = 2, every other element the list beginning at startAt and ending at endBefore will be selected. [Remember: indices live …

I want to get a list of the column headers from a Pandas DataFrame. The DataFrame will come from user input, so I won't know how many columns there will be or what they will be called. …

Is " if item in my_list: " the most "pythonic" way of finding an item in a list? EDIT FOR REOPENING: the question has been considered duplicate, but I'm not entirely convinced: …

The first way works for a list or a string; the second way only works for a list, because slice assignment isn't allowed for strings. Other than that I think the only difference is speed: it looks …

Aug 22, 2009 · How can I filter items from a list in Python? [duplicate] Asked 15 years, 10 months ago Modified 3 years, 6 months ago Viewed 54k times

Mar 20, 2013 · It gets all the elements from the list (or characters from a string) but the last element. : represents going through the list -1 implies the last element of the list