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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 tensor_dim_to_mesh_dim_size(layout, mesh_shape, tensor_dim):
 """How many ways does a tensor dimension get split. This is used to "cheat" when building the mtf graph and peek at how a tensor dimension will be split. Returns 1 if the tensor dimension is not split. Args: layout: an input to convert_to_layout_rules mesh_shape: an input to convert_to_shape tensor_dim: a Dimension Returns: an integer """

  layout_rules = convert_to_layout_rules(layout)
  mesh_shape = convert_to_shape(mesh_shape)
  mesh_axis = layout_rules.tensor_dimension_to_mesh_axis(tensor_dim, mesh_shape)
  if mesh_axis is None:
    return 1
  else:
    return mesh_shape.dims[mesh_axis].size