Finds the value of the first element in the given list that satisfies the provided testing function.
next() to return the first element in lst for which fn returns True.def find(lst, fn): return next(x for x in lst if fn(x)) find([1, 2, 3, 4], lambda n: n % 2 == 1) # 1
Finds the value of the last element in the given list that satisfies the provided testing function.
Finds the index of the first element in the given list that satisfies the provided testing function.
Finds the indexes of all elements in the given list that satisfy the provided testing function.
Finds the index of the last element in the given list that satisfies the provided testing function.