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annotate tests/test_broadcasting.py @ 15:926c127305fa

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[np] this is how broadcasting works
author Jeff Hammel <k0scist@gmail.com>
date Sun, 03 Sep 2017 12:11:03 -0700
parents ec5f97abf8ed
children
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1 #!/usr/bin/env python
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2
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3 """
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4 illustration of numpy broadcasting
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5 """
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6
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7 import os
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8 import unittest
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9 import numpy as np
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11 #apples, beef, eggs, potatos
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12 calories = [[56., 0.0, 4.4, 68.], # carbs
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13 [1.2, 104., 52., 8.], # protein
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14 [1.8, 135., 99., 0.9]] # fat
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16 class TestBroadcasting(unittest.TestCase):
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17 def test_basic(self):
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18 """example of broadcasting"""
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19
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20 A = np.array(calories)
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21 cal = A.sum(axis=0)
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22 print (cal)
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23 percentage = 100*A/cal.reshape(1,4)
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24 print (percentage)
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25
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26 if __name__ == '__main__':
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27 unittest.main()