title: Python battleship
body: <p>I know it's a lot of code, but I don't know what is important to the question.
  I don't know why the program stops after inserting the first <code>row_guess</code>; it doesn't repeat itself afterwards</p>
  
  <pre><code>board1 = []
  board2 = []
  
  
  for x in range(10):
      board1.append(["O"] * 10)
  
  for x in range(10):
      board2.append(["O"] * 10)
  
  def print_board1(board):
      for row in board:
          print " ".join(row)
  def print_board2(board):
      for row in board:
          print " ".join(row)
  
  print "Board User 1"
  print_board1(board1)
  print "----------------------------------------------"
  print "Board User 2"
  print_board2(board2)
  
  print "Let's play Battleship!"
  print "Try to destroy all you opponents battleship!"
  print"Good luck!"
  print " "
  print " "
  
  
  def U1_Input_row1(board1):
      x = float(raw_input("User 1, in what row do you want to place your first ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U1_Input_row1(board1)
  
  def U1_Input_col1(board1):
      x = float(raw_input("User 1, in what col do you want to place your first ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U1_Input_col1(board1)
  
  def U1_Input_row2(board1):
      x = float(raw_input("User 1, in what row do you want to place your second ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U1_Input_row2(board1)
  
  def U1_Input_col2(board1):
      x = float(raw_input("User 1, in what col do you want to place your second ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U1_Input_col2(board1)
  
  def U1_Input_row3(board1):
      x = float(raw_input("User 1, in what row do you want to place your third ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U1_Input_row3(board1)
  
  def U1_Input_col3(board1):
      x = float(raw_input("User 1, in what col do you want to place your third ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U1_Input_col3(board1)
  
  def U1_Input_row4(board1):
      x = float(raw_input("User 1, in what row do you want to place your fourth ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U1_Input_row4(board1)
  
  def U1_Input_col4(board1):
      x = float(raw_input("User 1, in what col do you want to place your fourth ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U1_Input_col4(board1)
  
  def U2_Input_row1(board2):
      x = float(raw_input("User 2, in what row do you want to place your first ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U2_Input_row1(board2)
  
  def U2_Input_col1(board2):
      x = float(raw_input("User 2, in what col do you want to place your first ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U2_Input_col1(board2)
  
  def U2_Input_row2(board2):
      x = float(raw_input("User 2, in what row do you want to place your second ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U2_Input_row2(board2)
  
  def U2_Input_col2(board2):
      x = float(raw_input("User 2, in what col do you want to place your second ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U2_Input_col2(board2)
  
  def U2_Input_row3(board2):
      x = float(raw_input("User 2, in what row do you want to place your third ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U2_Input_row3(board2)
  
  def U2_Input_col3(board2):
      x = float(raw_input("User 12 in what col do you want to place your third ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U2_Input_col3(board2)
  
  def U2_Input_row4(board2):
      x = float(raw_input("User 2, in what row do you want to place your fourth ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U2_Input_row4(board2)
  
  def U2_Input_col4(board2):
      x = float(raw_input("User 2, in what col do you want to place your fourth ship?"))
      if x &gt; 0 and x &lt; 10 and x%1 == 0:
          return x - 1
      else:
          print "Please enter an integer"
          U2_Input_col4(board2)
  
  U1_Input_row1 = U1_Input_row1(board1)
  U1_Input_col1 = U1_Input_col1(board1)
  U1_Input_row2 = U1_Input_row2(board1)
  U1_Input_col2 = U1_Input_col2(board1)
  U1_Input_row3 = U1_Input_row3(board1)
  U1_Input_col3 = U1_Input_col3(board1)
  U1_Input_row4 = U1_Input_row4(board1)
  U1_Input_col4 = U1_Input_col4(board1)
  U2_Input_row1 = U2_Input_row1(board2)
  U2_Input_col1 = U2_Input_col1(board2)
  U2_Input_row2 = U2_Input_row2(board2)
  U2_Input_col2 = U2_Input_col2(board2)
  U2_Input_row3 = U2_Input_row3(board2)
  U2_Input_col3 = U2_Input_col3(board2)
  U2_Input_row4 = U2_Input_row4(board2)
  U2_Input_col4 = U2_Input_col4(board2)
  
  User_Turn = 1
  total_ships2 = 4
  total_ships1 = 4
  
  
  if User_Turn == 21:
      print "Both players failed"
  else:
      if User_Turn % 2== 20:
          for turn in range(1):
              U2_Guess_row = int(raw_input("User 2, in what row do you think an enemy ship is?")) - 1
              U2_Guess_col = int(raw_input("User 2, in what col do you think an enemy ship is?")) - 1
              if U2_Guess_row == U1_Input_row1 and U2_Guess_col == U1_Input_col1 or U2_Guess_row == U1_Input_row2 and U2_Guess_col == U1_Input_col2 or U2_Guess_row == U1_Input_row3 and U2_Guess_col == U1_Input_col3 or U2_Guess_row == U1_Input_row4 and U2_Guess_col == U1_Input_col4:
                  print "Congratulations! You sunk an enemy battleship"
                  board1[guess_row][guess_col] = "#"
                  total_ships2 -= 1
                  print "Board User 1"
                  print_board1(board1)
                  print "----------------------------------------------"
                  print "Board User 2"
                  print_board2(board2)
                  if total_ships2 == 0:
                      print "User 2, you won the game!"
                      print "You destroyed all hostile ships!"
                      break
              else:
                  if (U2_Guess_row &lt; 0 or U2_Guess_row &gt; 9) or (U2_Guess_col &lt; 0 or U2_Guess_col &gt; 9):
                      User_Turn += 1
                      print User_Turn
                      print "Oops, that's not even in the ocean."
                  elif (board1[U2_Guess_row][U2_Guess_col] == "X"):
                      User_Turn += 1
                      print User_Turn
                      print "You guessed that one already."
                  else:
                      User_Turn += 1
                      print User_Turn
                      print "You missed my battleship!"
                      if turn == 9:
                          print "GAME OVER"
                          if turn == 9:
                              print "Game Over"
                  board1[U2_Guess_row][U2_Guess_col] = "X"
                  print "Turn", turn + 1
                  print "Board User 1"
                  print_board1(board1)
                  print "----------------------------------------------"
                  print "Board User 2"
                  print_board2(board2)
      else:
          for turn in range(1):
              U1_Guess_row = int(raw_input("User 1, in what row do you think an enemy ship is?")) - 1
              U1_Guess_col = int(raw_input("User 1, in what col do you think an enemy ship is?")) - 1
              if U1_Guess_row == U2_Input_row1 and U1_Guess_col == U2_Input_col1 or U1_Guess_row == U2_Input_row2 and U1_Guess_col == U2_Input_col2 or U1_Guess_row == U2_Input_row3 and U1_Guess_col == U2_Input_col3 or U1_Guess_row == U2_Input_row4 and U1_Guess_col == U2_Input_col4:
                  board2[U1_Guess_row][U1_Guess_col] = "#"
                  total_ships1 -= 1
                  print "Board User 1"
                  print_board1(board1)
                  print "----------------------------------------------"
                  print "Board User 2"
                  print_board2(board2)
                  print "Congratulations! You sunk an enemy battleship"
                  if total_ships1 == 0:
                      print "User 1, you won the game!"
                      print "You destroyed all hostile ships!"
                      print "Board User 1"
                      print_board1(board1)
                      print "----------------------------------------------"
                      print "Board User 2"
                      print_board2(board2)
                      break
              else:
                  if (U1_Guess_row &lt; 0 or U1_Guess_row &gt; 9) or (U1_Guess_col &lt; 0 or U1_Guess_col &gt; 9):
                      print "Oops, that's not even in the ocean."
                      User_Turn += 1
                      print User_Turn
                  elif (board2[U1_Guess_row][U1_Guess_col] == "X"):
                      User_Turn += 1
                      print User_Turn
                      print "You guessed that one already."
                  else:
                      User_Turn += 1
                      print User_Turn
                      print "You missed my battleship!"
                      if turn == 9:
                          print "GAME OVER"
                          if turn == 9:
                              print "Game Over"
                  board2[U1_Guess_row][U1_Guess_col] = "X"
                  print "Turn", turn + 1
                  print "Board User 1"
                  print_board1(board1)
                  print "----------------------------------------------"
                  print "Board User 2"
                  print_board2(board2)  
  </code></pre>