def single_prec(v): return (-1)**int(v[0])*sum([int(v[i])*2**(8-i) for i in range(1,23)]) def double_prec(v):##การบ้าน week04
return (-1)**(int(v[0]))* sum([int(v[i]) * (2 ** (11 - i))for i in range(1,23)])