index_of_all python Code Snippet in 2024
listintermediate
Last Updated: 20 April 2024
Returns a list of indexes of all the occurrences of an element in a list.
- Use
enumerate()and a list comprehension to check each element for equality withvalueand addingito the result.
def index_of_all(lst, value):
return [i for i, x in enumerate(lst) if x == value]index_of_all([1, 2, 1, 4, 5, 1], 1) # [0, 2, 5] index_of_all([1, 2, 3, 4], 6) # []
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