Oct 17, 2012 · Given a list xs and a value item, how can I check whether xs contains item (i.e., if any of the elements of xs is equal to item)? Is there something like xs.contains(item)? For performance

Feb 21, 2012 · 164 I want to check if my list of objects contain an object with a certain attribute value.

What is the fastest way to check if a value exists in a very large list (with millions of values) and what its index is?

Jan 25, 2022 · Is there any builtins to check if a list is contained inside another list without doing any loop? I looked for that in dir (list) but found nothing useful.

The difference is, I wanted to check if a string is part of some list of strings whereas the other question is checking whether a string from a list of strings is a substring of another string. Similar, but not quite …

Jan 28, 2010 · This simple filtering can be achieved in many ways with Python. The best approach is to use "list comprehensions" as follows:

Using any () and all () to check if a list contains one set of values or another Asked 12 years, 2 months ago Modified 1 year, 1 month ago Viewed 334k times

94 How can I test if a list contains another list (ie. it's a contiguous subsequence). Say there was a function called contains:

Say all of w, x, y, and z can be in list A. Is there a shortcut for checking that it contains only x--eg. without negating the other variables? w, x, y, and z are all single values (not lists, tup...

Apr 22, 2013 · The original question by @h1h1, as interpreted by most who answered it, was to identify if one list contains any of the same elements of another list. The question has been changed to …