parameters: (self, prefix)
return_statement: return Dataset(**ds)
docstring: Adds the given `prefix` to the name of every data object and returns
          a new Dataset.
docstring_summary: Adds the given `prefix` to the name of every data object and returns
          a new Dataset.
docstring_tokens: Adds the given prefix to the name of every data object and returns a new Dataset .
function: def prepend(self, prefix):
          """Adds the given `prefix` to the name of every data object and returns
          a new Dataset.
          """
          ds = dict()
          for name, data in self:
              ds[prefix+name] = data
  
          return Dataset(**ds)
function_tokens: def prepend ( self , prefix ) : ds = dict ( ) for name , data in self : ds [ prefix + name ] = data return Dataset ( * * ds )