title: Linking two items from two seperate lists together. python
body: <p>Underneath i have two lists which have been imported from a text file. I need a way in which to be able to link the lines together. so say if  line1 is printed randomly I want line2 to be printed.</p>
  
  <pre><code>line1 = (file.readline())
  line2 = (file.readline())
  line3 = (file.readline())
  line4 = (file.readline())
  line5 = (file.readline())
  line6 = (file.readline())
  line7 = (file.readline())
  line8 = (file.readline())
  line9 = (file.readline())
  line10 = (file.readline())
  line11 = (file.readline())
  line12 = (file.readline())
  line13 = (file.readline())
  line14 = (file.readline())
  line15 = (file.readline())
  line16 = (file.readline())
  line17 = (file.readline())
  line18 = (file.readline())
  line19 = (file.readline())
  line20 = (file.readline())
  line21 = (file.readline())
  line22 = (file.readline())
  line23 = (file.readline())
  line24 = (file.readline())
  line25 = (file.readline())
  line26 = (file.readline())
  line27 = (file.readline())
  line28 = (file.readline())
  line29 = (file.readline())
  line30 = (file.readline()) 
  
  # creates an empty list and fills it with all the definitions from the file
  defi = []
  defi.append(line2)
  defi.append(line4)
  defi.append(line6)
  defi.append(line8)
  defi.append(line10)
  defi.append(line12)
  defi.append(line14)
  defi.append(line16)
  defi.append(line18)
  defi.append(line20)
  defi.append(line22)
  defi.append(line24)
  defi.append(line26)
  defi.append(line28)
  defi.append(line30)
  randdef = random.choice(defi) #chooses random lines from the list 
  randdefi = random.choice(defi) # "       "      "     "   "   "
  
  #creates an empty list and fills it with all the keywords from the file
  key = []
  key.append(line1)
  key.append(line3)
  key.append(line5)
  key.append(line7)
  key.append(line9)
  key.append(line11)  
  key.append(line13)
  key.append(line15)
  key.append(line17)
  key.append(line19)
  key.append(line21)
  key.append(line23)
  key.append(line25)
  key.append(line27)
  key.append(line29)
  randkey = random.choice(key)
  </code></pre>
  
  <p>But i need to link certain lines in each list together. so they print together</p>