def find_nearest_n(number):     left = 0     right = number     while right-left >= 0.01:         if ((left+right)/2)**2 == number:             return (left+right)/2         elif ((left+right)/2)**2 > number:             right = (left+right)/2         else:             left = (left+right)/2     if int(right) > int(left):         return int(right)     elif left - int(left) < 0.5:         return int(left)     else:         return int(left)+1 阈值可以再调大一点 应该有还有更好的方法