Use a given fillvalue to fill in a shorter sequence and returns a sequence of equal length to the longer sequence. Takes a subset of the fill sequence if fill sequence is longer than the difference between the longer and shorter sequences
fill(longer, shorter, fillvalue)
longer vector-like object
shorter vector-like object
sequence of value(s) to fill in shorter vector. If fillvalue is longer than the difference between `shorter` and `longer`, values from fillvalue will be taken only until `shorter` is the same length as `longer`