neural network - python code does not generate any output -

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i tried run code in http://sourceforge.net/projects/triangleinequal/files/machine%20learning/nn.py/download

it run without error.. not generate output. how can output graph? please help

the code not meant produce "output" text. prepares plot never shows it.

add end of test_regression:

plt.show()

and execute test_regression uncommented


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