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map to numpy array

>>> import numpy as np    
>>> f = lambda x: x**2
>>> seq = map(f, range(5))
>>> np.fromiter(seq, dtype=np.int)
array([ 0,  1,  4,  9, 16])

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map numpy array

import numpy as np 
x = np.array([1, 2, 3, 4, 5])
# Obtain array of square of each element in x
squarer = lambda t: t ** 2
squares = np.array([squarer(xi) for xi in x])

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map to numpy array

map numpy array

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