Determine the quadrant of the Cartesian plane

Write a Python program to determine the quadrant of the Cartesian plane given the (x, y) coordinates of a point.

To test this program try to execute a test case for each one of the possible 9 outputs (i.e. the 4 different pieces of axis, the origin and the 4 different quadrants).

Insist that the students test their programs by giving them hints on
what to test to get all possible outputs.