optimizer.py 文件源码

def __init__(self, opt):
        """Constructor.

        Args:
          opt: an instance of a class that implements tf.train.Optimizer.
        """
        if not isinstance(opt, optimizer.Optimizer):
            raise TypeError(
                'Supplied optimizer must be an instance of tf.train.Optimizer')
        self._opt = opt
        overridden_methods = ('_apply_dense', '_resource_apply_dense',
                              '_apply_sparse', '_resource_apply_sparse')
        for name in overridden_methods:
            fn = getattr(self._opt, name)
            wrapper = _get_wrapper(fn, self._opt)
            setattr(self._opt, name, wrapper)