Correct ways to save evaluation informations to a self defined file

[Will Tsing]

Hi there,

Thanks for this lovely algorithm code and I was a little bit struggle on a naive problem: saving each evaluation informations(ie. evaluation, best , worst) to my self defined file.

I've found the file_observer in the observers. I tried to pass a self defined(name and path) opening file to it like this:

statistics_file = open('/'.join(path, filename), 'w')
inspyred.ec.observers.file_observer(population, num_generations, num_evaluations, statistics_file)

so that it could write to it.

However I get the following TypeError:

TypeError: '_io.TextIOWrapper' object is not subscriptable

Any hints for this?

[Aaron Garrett]

Look at the Lunar Explorer example (http://pythonhosted.org/inspyred/tutorial.html#id11) to see how the file_observer should be used. Let me know if that doesn't clear it up for you.

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Aaron Garrett, Ph.D.

Assistant Professor

Computer Science

Wofford College

429 North Church Street

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garr...@wofford.edu

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