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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def sg_log(tensor, opt):
 r"""Log transform a dense tensor See `tf.log()` in tensorflow. Args: tensor: A `Tensor` ( automatically given by chain ) opt: name: If provided, replace current tensor's name. Returns: A `Tensor`. """

    return tf.log(tensor + tf.sg_eps, name=opt.name)