Comment by arathore

> When printing tracebacks, the interpreter will now point to the exact expression that caused the error instead of just the line. For example:

  Traceback (most recent call last):
    File "distance.py", line 11, in <module>
      print(manhattan_distance(p1, p2))
            ^^^^^^^^^^^^^^^^^^^^^^^^^^
    File "distance.py", line 6, in manhattan_distance
      return abs(point_1.x - point_2.x) + abs(point_1.y - point_2.y)
                             ^^^^^^^^^
  AttributeError: 'NoneType' object has no attribute 'x'

This is such a great quality of life improvement.