title: Nested lists references not working
body: <p>I'm a noob in middle school. I have a short piece of code that isn't working:</p>
  
  <pre><code>board=[]
  temp=[]
  
  for var0 in range(17):
      temp.append('  ')
  for var in range(17):
      board.append(temp)
  class group:
      def __init__(self):
          self.f=[]
          self.x=[]
          self.y=[]
  
  groupb=[]
  groupw=[]
  
  while 1:
      for var0 in range(17):
          for var1 in range(17):
              if var1==16:
                  print((board[var0])[16])
              else:
                  print((board[var0])[var1],end='')
      move=input()
      move=(move.lower()).split()
      move[1]=int(move[1])
      move[2]=int(move[2])
      if move[0]=='b':
          board[move[1]][move[2]]=' b'
          for var0 in range(len(groupb)):
              if (move[1]-1 in groupb[var0].x or move[1]+1 in groupb[var0].x or move[1] in groupb[var0].x) and (move[2]-1 in groupb[var0].y or move[2]+1 in groupb[var0].y or move[2] in groupb[var0].y):
                  (groupb[var0].x).append(move[1])
                  (groupb[var0].y).append(move[2])
                  temp=1
          if temp!=1:
              groupb.append('')
              groupb[len(groupb)-1]=group()
      elif move[0]=='w':
          board[move[1]][move[2]]=' w'
          for var0 in range(len(groupw)):
              if (move[1]-1 in groupw[var0].x or move[1]+1 in groupw[var0].x or move[1] in groupw[var0].x) and (move[2]-1 in groupw[var0].y or move[2]+1 in groupw[var0].y or move[2] in groupw[var0].y):
                  (groupw[var0].x).append(move[1])
                  (groupw[var0].y).append(move[2])
          if temp!=1:
              groupw.append('')
              groupw[len(groupb)-1]=group()
      else:
          print('TurnError')
  </code></pre>
  
  <p>But every time I try to run it, it spits out an entire column when I only want a  single character:</p>
  
  <pre><code>     b                        
       b                        
       b                        
       b                        
       b                        
       b                        
       b                        
       b                        
       b                        
       b                        
       b                        
       b                        
       b                        
       b                        
       b                        
       b                        
       b                        
  </code></pre>
  
  <p>Can anybody tell me what I'm doing wrong? I'm really confused.</p>