I want to check if the input is str or is int & if it's str repeat the loop

[perfringo]

I just observe that converting to int is probably not the only problem. I assume that some sort of matrice or table would be constructed based on number of rows and columns. Quite obviously one will have problems constructing such with negative or 0 values. int() will happily accept these values:

>>> int('-42')     # does -42 rows make sense?
-42
>>> int('0')       # does 0 columns make sense?
0