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python how to vectorize a function

import numpy as np
import math
from math import *


def h_scalar(x):
    return (1 / sqrt(2 * pi)) * exp(-.50** x ** 2.00)

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python vectorize

import numpy as np

# array
a = np.array(["a b c", "d e f", "h i j"])

# function
replace_space = np.vectorize(lambda x: x.replace(" ", "_"))

# response
print(replace_space(a))

# will return: ['a_b_c' 'd_e_f' 'h_i_j']

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