计算列表python中的空格数

Question

I am making a text based game, and you can place a ship piece off the game board (not a intended feature). I have been searching the web for a way to count 2 characters into a list and see if it is a certain character (so i can tell if someone placed off the board), but so far i have not found any solution. Anyone have any ideas?

Answer 1

It would be more helpful to have an example of what your list looks like, but here's one possible solution.

Assuming you have a list of X's and O's like so:

example_list = ['X', 'O', 'O', 'X']

Now:

# Check if the second character is 'O'
if example_list[1] == 'O':
    # Do something
else:
    # Do something else

Note that this would work the same way with the string "XOOX" , ie

>>> example_string = "ABCD"
>>> print example_string[1]
B
>>> example_string[1] == "B"
True
>>> example_string[1] == "X"
False