title: Trying to replace an item in a list with another item
body: <p>I'm trying to replace an item in a list not necessarily at the end, just the position of the original item, then have it require the new item when it's asking you for your password. I'm kind of new to Python.</p>
  
  <pre><code>passwords = ['mrjoebblock' , 'mrjoefblock' , 'mrjoegblock', 'mrjoeadmin' ]
  if choice == '3':
          password = raw_input('Welcome admin! I\'m going to need your password ')
          if password == 'mrjoeadmin':
              print('Welcome Mr. Joe!')
              Choice11 = raw_input('What would you like to do? Press 1 for changing your admin password, 2 for viewing a class\'s comments, or 3 for changing a class\'s password')
              if Choice11 == '1':
                  print('You have chosen to change your password! ')
                  Choice12 = raw_input('You will need to put in your current password to access this feature ')
                  if Choice12 == 'mrjoeadmin':
                      Choice13 = raw_input('What would you like to change your password to? ')
                      passwords.remove('mrjoeadmin')
                      passwords.append(Choice13)
                      print('Thank you! Password has been changed. Log in with new password next time')
                      break
              if Choice11 == '2':
                  print('you have chosen to view a class\'s comments!')
                  Choice14 = raw_input('Which block would you like to view?')
                  if Choice14 == 'F block':
                      print('To view F block\'s comments, go to where you search for things in your computer, and search CommentsFblock.txt. Open it')
                      time.sleep(10)
                      break
                  if Choice14 == 'G block':
                      print('To view G block\'s comments, go to where you search for things in your computer, and search CommentsGblock.txt. Open it')
                      time.sleep(10)
                      break
                  if Choice14 == 'B block':
                      print('To view B block\'s comments, go to where you search for things in your computer, and search CommentsBblock.txt. Open it')
                      time.sleep(10)
                      break
                  else:
                      print('I\'m sorry, that\'s not a valid block name.')
                      time.sleep(2)
                      break
              if Choice11 == '3':
                  print('you have chosen to change a block\'s password.')
                  Choice15 = raw_input('Which block\'s password would you like to change?')
                  if Choice15 == 'F block':
                      Choice16 = raw_input('You will need to put in your current password to change F block\'s password ')
                      if Choice16 == 'mrjoeadmin':
                          Choice17 = raw_input('What would you like to change F block\'s password to? ')
                          passwords.remove('mrjoefblock')
                          passwords.append(Choice17)
                          print('Thank you! Password has been changed. Remember to tell students the password has been changed')
                          time.sleep(3)
                          break
                  if Choice15 == 'G block':
                      Choice18 = raw_input('You will need to put in your current password to change G block\'s password ')
                      if Choice18 == 'mrjoeadmin':
                          Choice19 = raw_input('What would you like to change G block\'s password to? ')
                          passwords.remove('mrjoegblock')
                          passwords.append(Choice19)
                          print('Thank you! Password has been changed. Remember to tell students the password has been changed')
                          time.sleep(3)
                          break
                  if Choice15 == 'B block':
                      Choice20 = raw_input('You will need to put in your current password to change B block\'s password ')
                      if Choice20 == 'mrjoeadmin':
                          Choice21 = raw_input('What would you like to change B block\'s password to? ')
                          passwords.remove('mrjoebblock')
                          passwords.append(Choice21)
                          print('Thank you! Password has been changed. Remember to tell students the password has been changed')
                          time.sleep(3)
                          break
  </code></pre>