parameters: (a, b)
return_statement: return Fraction(a.numerator * db + b.numerator * da,
                          da * db)
docstring: a + b
docstring_summary: a + b
docstring_tokens: a + b
function: def _add(a, b):
          """a + b"""
          da, db = a.denominator, b.denominator
          return Fraction(a.numerator * db + b.numerator * da,
                          da * db)
function_tokens: def _add ( a , b ) : da , db = a . denominator , b . denominator return Fraction ( a . numerator * db + b . numerator * da , da * db )