parameters: (self, str)
docstring: Push the given string as part of the current argument
docstring_summary: Push the given string as part of the current argument
docstring_tokens: Push the given string as part of the current argument
function: def _push(self, str):
          '''
          Push the given string as part of the current argument
          '''
          if self.arg is None:
              self.arg = ''
          self.arg += str
function_tokens: def _push ( self , str ) : if self . arg is None : self . arg = '' self . arg += str