parameters: (a)
return_statement: return Fraction(-a._numerator, a._denominator, _normalize=False)
docstring: -a
docstring_summary: -a
docstring_tokens: - a
function: def __neg__(a):
          """-a"""
          return Fraction(-a._numerator, a._denominator, _normalize=False)
function_tokens: def __neg__ ( a ) : return Fraction ( - a . _numerator , a . _denominator , _normalize = False )