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61 lines
1.0 KiB
Python
61 lines
1.0 KiB
Python
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#!/usr/bin/env python
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__author__ = "bt3"
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import time
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import numpy as np
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def testing_numpy():
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''' tests many features of numpy '''
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ax = np.array([1,2,3])
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ay = np.array([3,4,5])
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print(ax)
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print(ax*2)
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print(ax+10)
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print(np.sqrt(ax))
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print(np.cos(ax))
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print(ax-ay)
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print(np.where(ax<2, ax, 10))
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m = np.matrix([ax, ay, ax])
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print(m)
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print(m.T)
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grid1 = np.zeros(shape=(10,10), dtype=float)
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grid2 = np.ones(shape=(10,10), dtype=float)
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print(grid1)
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print(grid2)
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print(grid1[1]+10)
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print(grid2[:,2]*2)
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def trad_version():
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t1 = time.time()
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X = range(10000000)
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Y = range(10000000)
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Z = []
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for i in range(len(X)):
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Z.append(X[i] + Y[i])
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return time.time() - t1
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def numpy_version():
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t1 = time.time()
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X = np.arange(10000000)
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Y = np.arange(10000000)
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Z = X + Y
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return time.time() - t1
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if __name__ == '__main__':
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testing_numpy()
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print(trad_version())
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print(numpy_version())
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'''
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3.23564291
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0.0714290142059
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'''
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