Please correct the test suite so there are brackets around your y_correct. Adding a couple of other magic squares (5 and 6) would also help.

Hi Anumpam: Thanks for the problem. You need to fix the test suite as James says. Also, since you haven't specified what order you want the numbers in, you should probably check to make sure the matrix has magic properties (rows add to the same number, etc.) rather than testing that it matches exactly one matrix. There are lots of magic 4-by-4 matrices.

Hi Anupam, could you please correct this testsuite? (just change the line that reads "y_correct = 16 3 2 13;5 10 11 8;9 6 7 12;4 15 14 1" to read instead "y_correct = [16 3 2 13;5 10 11 8;9 6 7 12;4 15 14 1]")