My flask website not working properly

[Aggam]

didn't look much but there is mismatch with some spaces and new lines
try to replace needed with

needed = [
    "DATASEG\n; --------------------------\n; Your variables here\n; --------------------------\n",
    "start:\n    mov ax, @data\n    mov ds, ax\n; --------------------------\n; Your code here\n; --------------------------\n"
    ]

also in check.py line 23 you want to check for needed[1]

Thanks!
Now I only get the "you dont have 'your code here' comment / not in the right place.<br />" but ill try to fix that