Search file for X and see if the file contains it or not

I am making a simple battleship game with a computer for singleplayer mode. I don't want the bot to guess in the same place as it has already guessed. I have been trying to use .txt files as "logs" for old guesses, convert them to a list and then run through them with a "for" statement. The problem I am having is detecting when the entire file had NOT got the coordinates it has guessed. Is there a better way of doing this?

Here is the code WITHOUT detection for un-guessed guesses

import random
f = open("guesses.txt", "w")
guessing = True

while guessing == True:
    guess = random.sample(range(0, 4)2)
    f = open("guesses.txt", "r")
    f = f.readlines()
    for i in f:
        if guess == i:
            break

Thank-You so very much in advance Files look like this:

[2, 3]
[3, 2]
[3, 0]
[1, 4]
[4, 3]

CodePudding user response：

From what I’m getting, you could simply do something like this:

with open("yourfile.txt", "r") as file:
    contents = file.read()
    if str(my_guess) in contents:
        print("The guess is not unique")
    else:
        print("The guess is unique")

CodePudding user response：

Is there a better way of doing this?

If I were writing a battleship game, I would either keep a list of guesses or a 2D array with guesses marked. I wouldn't bother with a file at all.

Files are intended for more permanent storage. For example, if you want to save a game and continue it later. They don't make sense for keeping track of the state of the game as you play it.