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The NumPy Package

NumPy is a Python package that facilitate working with multidimensional arrays, vectors, matrices, linear algebra, etc.

import numpy as np
# Example: ndarry objects
# create 2x3 ndarray of floats from a list of lists
m = np.array([[1, 2, 3], [4, 5, 6]], dtype=np.float32)
print("m.shape =", m.shape)
print("m.dtype =", m.dtype)
print("m =\n" + str(m))
m = m.astype(np.int32) # cast the ndarray from float to int
print("m =\n" + str(m))
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