Find what index an element is in a list
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Finding the index of an item in a list
92688
Python: Determine if an unsorted list is contained in a 'list of lists', regardless of the order to the elements
120211
finding and replacing elements in a list
24041
Finding first and last index of some value in a list in Python
140915
How to get the element number/index between siblings
74828
Select element by index (multiple elements of same class)
52869
Find the most common element in a list
88591
Pythonic way to find maximum value and its index in a list?
124280
Test if array is inside a list in lisp
34755
Negative list index?
43883
How to find the foreach index?
36550
Python: Find a substring in a string and returning the index of the substring
150842
Getting the index of a current element across all matched elements in the DOM
18795
Find the Smallest Integer Not in a List
88394
Check if one list contains element from the other
35004
Getting the index of the returned max or min item using max()/min() on a list
116631
How to get indices of a sorted array in Python