parameters: (self)
return_statement: return not self._is_special and self._int == '0'
docstring: Return True if self is a zero; otherwise return False.
docstring_summary: Return True if self is a zero; otherwise return False.
docstring_tokens: Return True if self is a zero ; otherwise return False .
function: def is_zero(self):
          """Return True if self is a zero; otherwise return False."""
          return not self._is_special and self._int == '0'
function_tokens: def is_zero ( self ) : return not self . _is_special and self . _int == '0'