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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 GlorotUniformInitializer(out_dim=0, in_dim=1):
 """An initializer function for random uniform Glorot-scaled coefficients."""

  def init(shape, rng):
    fan_in, fan_out = shape[in_dim], shape[out_dim]
    std = np.sqrt(2.0 / (fan_in + fan_out))
    a = np.sqrt(3.0) * std
    return backend.random.uniform(rng, shape, minval=-a, maxval=a)
  return init