title: How to find a value in a 2D array in python?
body: <p>I'm making a board game for school and I would like to be able to find the index of the place number they have and replace the number on the board with their counter ("x" or "y").</p>
  
  <pre><code>board = [
      ["43","44","45","46","47","48","49"],
      ["42","41","40","39","38","37","36"],
      ["29","30","31","32","33","34","35"],
      ["28","27","26","25","24","23","22"],
      ["15","16","17","18","19","20","21"],
      ["14","13","12","11","10","9 ","8 "],
      ["1 ","2 ","3 ","4 ","5 ","6 ","7 "]
  
      ]
  
  for line in board:
      print (line)
  roll = input("Player " + player + " press enter to roll the dice")
  print ("Your counter is",counter)
  
  if roll != "blablabla":
      die1 = random.randint(1,6)
      die2 = random.randint(1,6)
      dice = die1 + die2
      print (die1)
      print (die2)
      print ("You rolled",dice)
  
  if player == "one":
      place1 =(place1+dice)
      print ("P1's place is",place1)
  else:
      place2 =(place2+dice)
      print ("P2's place is",place2)
  </code></pre>
  
  <p>How can I find the string version of "place1" or "place2" in the board and replace that index with something else?</p>
  
  <p>Thank you!</p>