def bias_variable(shape):
    'bias_variable generates a bias variable of a given shape.'
    initial = tf.constant(0.1, shape=shape)
    return tf.Variable(initial, name='B')
bias_variable generates a bias variable of a given shape.
def bias_variable(shape):
    
    initial = tf.constant(0.1, shape=shape)
    return tf.Variable(initial, name='B')