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alternatives for appending to numpy array

import numpy as np

array=np.zeros(n)
# n= your array lenth
for i in range(n):
	array[i] = v
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alternatives for appending to numpy array


In [2]: a = np.empty((0,3), int)

In [3]: a
Out[3]: array([], shape=(0L, 3L), dtype=int32)

In [4]: a = np.append(a, [[1,2,3]], axis=0)

In [5]: a
Out[5]: array([[1, 2, 3]])

In [6]: a = np.append(a, [[1,2,3]], axis=0)

In [7]: a
Out[7]:
array([[1, 2, 3],
       [1, 2, 3]])

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