老师我的代码在train_steps出错了,报错,TypeError: bad operand type for unary -: 'Operation'
train_step = -tf.train.AdamOptimizer(1e-4).minimize(cross_entropy)
train_step = -tf.train.AdamOptimizer(1e-4).minimize(cross_entropy)
 
                            2018-09-21
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