parameters: (self, filename)
docstring: Set the filename.
  
          The main refactoring tool should call this.
docstring_summary: Set the filename.
docstring_tokens: Set the filename .
function: def set_filename(self, filename):
          """Set the filename.
  
          The main refactoring tool should call this.
          """
          self.filename = filename
function_tokens: def set_filename ( self , filename ) : self . filename = filename