Go to main.py write a function called xo that accepts an integer size as a parameter and prints a square of size by size characters, where all characters are " 0 " except that an " x " pattern of "x" characters has been drawn from the corners of the square. On the first line, the first and last characters are "x"; on the second line, the second and second-from-last characters are "x"; and so on. For example, the call of xo(5) should produce the following outputs: xooox oxoxo ooxoo oxoxo xooox the call of xo(6) should produce the following outputs: xoooox ox0oxo ooxxoo 00xx00 ox0oxo xoooox