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Enh/logging #9

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Enh/logging #9

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jakobj
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@jakobj jakobj commented Jul 2, 2018

This PR add simple logging to snes. In addition to the screen output a log file is written according to the verbosity level given by the user. Please have a look @mschmidt87

Branches of from #4, so should not be merged before.

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Nice work. Just one minor comment.

n_total_individuals = population_size * (1 + int(mirrored_sampling))
logger.info('starting evolution with {} individuals per generation on {} threads'.format(n_total_individuals, parallel_threads))
if (parallel_threads is None and n_total_individuals > 1) or (parallel_threads is not None and n_total_individuals > parallel_threads):
logger.warning('more individuals than parallel threads. expect long runtime')
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"expect long runtime" sounds a bit casual. What about

"more individuals ({}) than parallel threads ({}). consider increasing the number of parallel threads.".format(n_total_individuals, parallel_threads)

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Is it a convention to use only lowercase in logging messages?

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