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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 get_name(node):
 """Get the name of a variable. Args: node: A `Name`, `Subscript` or `Attribute` node. Returns: The name of the variable e.g. `'x'` for `x`, `x.i` and `x[i]`. """

  if isinstance(node, gast.Name):
    return node.id
  elif isinstance(node, (gast.Subscript, gast.Attribute)):
    return get_name(node.value)
  else:
    raise TypeError