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GeezerVison is showing github.com — Beginning-Python-Visualization/Chapter07/src/magicsq.py at master · freephys/Beginning-Python-Visualization Expand file tree/ Copy pathmagicsq.pyMore file actions 22 lines (18 loc) · 597 Bytes / Copy pathmagicsq.pyFile metadata and controls22 lines (18 loc) · 597 Bytes 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 from pylab import * def magicsq(n=3): """Returns a magic square of size n; n must be odd""" if n % 2 != 1: raise ValueError, "Magic(n) requires n to be odd" m, row, col = zeros([n, n]), 0, n/2 for num in xrange(1, n**2+1): m[row, col] = num # fill the cell col = (col+1) % n row = (row-1) % n if m[row, col]: col = (col-1) % n row = (row+2) % n return m def testmagicsq(m): """Returns True if m is a magic square.""" msum = sum(m[0, :]) return all(m.sum(0) == msum) and all(m.sum(1) == msum) |
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