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fixed error when eval False (#1271)

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Vladimir 2016-06-12 18:36:36 +02:00 committed by Tianqi Chen
parent 7cfeb5f012
commit aaf0a73486
1 changed files with 1 additions and 1 deletions
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2
python-package/xgboost/callback.py
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@ -38,7 +38,7 @@ def print_evaluation(period=1, show_stdv=True):
"""
def callback(env):
"""internal function"""
if env.rank != 0 or len(env.evaluation_result_list) == 0:
if env.rank != 0 or len(env.evaluation_result_list) == 0 or period is False:
return
i = env.iteration
if (i % period == 0 or i + 1 == env.begin_iteration):