import numpy as np
n = 2
X = np.empty(shape=[0, n])
for i in range(5):
for j in range(2):
X = np.append(X, [[i, j]], axis=0)
print X
arr = np.array([])numpy.empty(shape, dtype=float, order='C') a = []
for x in y:
a.append(x)
a = np.array(a)# Create an empty array with 2 elements
np.empty(2)
array([ 3.14, 42. ]) # may varyimport numpy as np
b = np.empty(2, dtype = int)
print("Matrix b : \n", b)
a = np.empty([2, 2], dtype = int)
print("\nMatrix a : \n", a)
c = np.empty([3, 3])
print("\nMatrix c : \n", c)