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| ksr | pythonI'm getting started with Python by writing some matrix arithmetic functions. Here is my addition function - my question is what is a nicer, more pythony way of doing it? def madd (m1, m2): if (len(m1) != len(m2)) or (len(m1[0]) != len(m2[0])): print "matrices cannot be added as they are not the same size" exit() m3 = copy.deepcopy(m1) for row in range(len(m1[0])): for column in range(len(m1)): m3[row][column] += m2[row][column] return m3 | 2010-10-06 | 1:43 AM |
| ksr | Re:pythonI've cracked it: m3 = [[m1[row][col] + m2[row][col] for col in range(len(m1[0]))] for row in range(len(m1))] | 2010-10-06 | 5:29 PM |
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