How to make if the number was not an integer, gave out -1 in response?

Question

Facebook

def get_row_len(row, col, cell_index):
    if (cell_index / row) - col == float:
        return -1

I need that if the answer is in action (cell_index / row) - col was an integer, if it is not an integer it writes -1
I wrote that, what's wrong here?

Answer 1

These are exactly the application settings, it may be worth adding domains like site.ru and www.site.ru or any other domains if used
or recreate it

Answer 2

You are comparing some number with a type, nothing bothers you?

def get_row_len(row, col, cell_index):
    A = (cell_index / row) - col
    if round(A) != A:
        return -1

Answer 3

is_float = lambda x: bool(x % 1 )
def get_row_len(row, col, cell_index):
    if is_float(cell_index / row - col):
        return -1

or right away

def get_row_len(row, col, cell_index):
    if (cell_index / row - col) % 1:
        return -1

Answer 4

def get_row_len(row, col, cell_index):
    a = (cell_index / row) - col
    if int(a) != a:
        return -1

Answer 5

def get_row_len(row, col, cell_index):
    if type((cell_index / row) - col)) == float:
        return -1
//////////
isinstance(1.1, float)
>>> True

Answer 6

is_integer() method

a = (cell_index / row) - col
if a.is_integer():
  return a
else:
  return -1