Python doesn't save a text file after closing the program-CodePudding

I'm currently stuck on a saving issue. I want to create levels for a game and I'd like to build and modify them in a pygame program, then save them in the form of a string in a .txt file. For now, I managed to open an existing file named "level_n.txt", delete the old level I want to overwrite, and write the new level matrix in the text file. At this point, everything works perfectly. If I modify the text file, close it, re-open it in the same program run, and print the level, the changes were saved.

Here is my problem : when I close my whole program and re-open it, the level isn't changed, and when I open the text file of the level manually, the changes aren't here either.

So from my perspective, it looks like python creates a copy of the file in the RAM, overwrites it, uses it, but when it closes, the text file doesn't save.

I've included the part where I write the text, and a level example just in case. (I've tried to write the text using w, w , r , a , none of these solve my issue)

if event.type == pygame.KEYDOWN: #checks for save
                if event.key == pygame.K_s:
                    with open('level' str(n 3) '.txt', 'w ') as f:
                        f.truncate(0)
                        for i in range(0,len(level)):
                            lin = ""
                            for j in range(0,len(level[0])):
                                lin = lin   str(level[i][j][0]) "," str(level[i][j][1])   "."
                            lin = lin[:-1] "\n"
                            f.writelines(lin)  
                        
                    with open('level' str(n 3) '.txt', 'r') as g:
                        level = [[[int(num[0]),int(num[2])] for num in line.split('.')] for line in g]
                        print(level)
                    print("contents saved ! (maybe)")

inside "level4.txt"

1,3.1,3.1,3.1,3.1,3
1,2.0,0.0,0.0,0.1,2
1,2.0,0.1,1.0,0.1,2
1,2.0,0.0,0.0,0.1,2
1,3.1,3.1,3.1,3.1,3

I'm new to stack overflow so if my question isn't interesting enough, please let me know, no need to downvote me I'll just delete it

Python 3.8, window 10

CodePudding user response：

Use the full path to the file instead of just the name of the file and it should work fine For example:

with open(r'E:\Project\level' str(n 3) '.txt', 'w ') as f: