Whitespace helps too! And I think using `sorted(key=)` is more Pythonic than a generator expression ;)

   from operator import itemgetter

   def maxWidthOfVerticalArea(self, points: List[List[int]]) -> int:
       xs = sorted(points, key=itemgetter(0))
       x_pairs = zip(xs, xs[1:])

       widths = (right-left for left, right in x_pairs)

       return max(widths)

NumPy also has stuff to solve this sort of thing built-in:

   from numpy import diff

   def maxWidthOfVerticalArea(self, points: List[List[int]]) -> int:
       xs = sorted(points, key=itemgetter(0))
       widths = diff(xs)

       return widths.max()