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How to add an extra column to a NumPy array
...a,np.zeros((a.shape[0],1))))
10000 loops, best of 3: 19.6 us per loop
In [27]: %timeit b = np.zeros((a.shape[0],a.shape[1]+1)); b[:,:-1] = a
100000 loops, best of 3: 5.62 us per loop
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Abhishek SrivastavaAbhishek Srivastava
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answered Sep 6 '10 at 13:40
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edited Jun 27 '17 at 13:40
Kartoch
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