parameters: (a, b)
return_statement: return b
docstring: Greatest common divisor using Euclid's algorithm.
docstring_summary: Greatest common divisor using Euclid's algorithm.
docstring_tokens: Greatest common divisor using Euclid s algorithm .
function: def gcd2(a, b):
    """Greatest common divisor using Euclid's algorithm."""
    while a:
      a, b = b%a, a
    return b
function_tokens: def gcd2 ( a , b ) : while a : a , b = b % a , a return b