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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 create_linear_initializer(input_size, dtype=tf.float32):
 """Returns a default initializer for weights of a linear module."""

  stddev = 1 / math.sqrt(input_size)
  return tf.truncated_normal_initializer(stddev=stddev, dtype=dtype)