parameters: (self)
return_statement: return self._stderr.getvalue()
docstring: Captured standard error
docstring_summary: Captured standard error
docstring_tokens: Captured standard error
function: def stderr(self):
          "Captured standard error"
          if not self._stderr:
              return ''
          return self._stderr.getvalue()
function_tokens: def stderr ( self ) : if not self . _stderr : return '' return self . _stderr . getvalue ( )