from functools import reduce
def spread(arg):
ret = []
for i in arg:
if isinstance(i, list):
ret.extend(i)
else:
ret.append(i)
return ret
def gcd(*args):
numbers = []
numbers.extend(spread(list(args)))
def _gcd(x, y):
return x if not y gcd(y, x % y)
return reduce((lambda x, y: _gcd(x, y)), numbers)
gcd(8, 36) # 4