Battleship "And Seek"............I keep getting an error, Please help


Hi all,

I have searched the forum, read previous queries and compared my code to code in the forum. I cannot see why I am getting this error, I even copied and pasted my code from the instructions but I still get an error. Can anyone help, and guide as to where I am going wrong and why I am wrong on this please. Code screenshot as follows.


Error Message:

Thanks everyone

And Seek.......Not calling raw_input function twice

What that error message is saying:
An empty string can't be converted to an integer.


You need to input some number (in valid range) for the row.