Line Between Two Points

The Point class, with distance_to, is given. Write the whole Line class: a line is not a point, it HAS two of them, so the constructor stores start and end as Point attributes; length() returns the distance between them by calling self.start.distance_to(self.end); midpoint() returns a new Point whose x is the mean of the two x values and whose y is the mean of the two y values. Do NOT write a main block or any top-level test code; the tests construct the class. Input: two lines, the x and y of the end point, which the tests read as floats; the start is (0, 0), and the tests print the length and then the midpoint's x and y on one line.