So i am making a test coding language and i need to code a goto statement (ik while and for are alternatives but i want to use goto for this) is there a way to go back in the file?
Here is my code:

with open("code.txt", "r") as file:
  for line in file:
    line = line.split(" ")
    if line[0] == "ADD":
      cmd.ADD(int(line[1]), int(line[2]), line[3])
    elif line[0] == "OUT":
      cmd.OUT(line[1])
    elif line[0] == "GOTO":
      #code for changing lines here (will be in the cmd class if possible)
    

also just to clarify, cmd is the class holding all the commands

i tried using seek() but it changes the file pointer for each byte, not line