Bug coz by different way dealing with metaclass

liudragonfly / GBDT

A simple GBDT in Python

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Open ericxsun opened 8 years ago

ericxsun commented 8 years ago

Bug coz by different way dealing with metaclass by Python2.7 and Python3.*

Python 3.*:

class ClassName(metaclass=abc.ABCMeta)

Python 2.7:

class ClassName:
  __metaclass__ = abc.ABCMeta