Skip to Content
Make a List

Good! Now we’ll use a built-in Python function to generate our board, which we’ll make into a 5 x 5 grid of all "O"s, for “ocean.”

print ["O"] * 5

will print out ['O', 'O', 'O', 'O', 'O'], which is the basis for a row of our board.

We’ll do this five times to make five rows. (Since we have to do this five times, it sounds like a loop might be in order.)



Create a 5 x 5 grid initialized to all ‘O’s and store it in board.

  • Use range() to loop 5 times.
  • Inside the loop, .append() a list containing 5 "O"s to board, just like in the example above.

Note that these are capital letter “O” and not zeros.

Folder Icon

Take this course for free

Already have an account?