title: How to sort a Pandas DataFrame according to multiple criteria?
body: <p>I have the following DataFrame containing song names, their peak chart positions and the number of weeks they spent at position no 1:</p>
  
  <pre><code>                                          Song            Peak            Weeks
  76                            Paperback Writer               1               16
  117                               Lady Madonna               1                9
  118                                   Hey Jude               1               27
  22                           Can't Buy Me Love               1               17
  29                          A Hard Day's Night               1               14
  48                              Ticket To Ride               1               14
  56                                       Help!               1               17
  109                       All You Need Is Love               1               16
  173                The Ballad Of John And Yoko               1               13
  85                               Eleanor Rigby               1               14
  87                            Yellow Submarine               1               14
  20                    I Want To Hold Your Hand               1               24
  45                                 I Feel Fine               1               15
  60                                 Day Tripper               1               12
  61                          We Can Work It Out               1               12
  10                               She Loves You               1               36
  155                                   Get Back               1                6
  8                               From Me To You               1                7
  115                              Hello Goodbye               1                7
  2                             Please Please Me               2               20
  92                   Strawberry Fields Forever               2               12
  93                                  Penny Lane               2               13
  107                       Magical Mystery Tour               2               16
  176                                  Let It Be               2               14
  0                                   Love Me Do               4               26
  157                                  Something               4                9
  166                              Come Together               4               10
  58                                   Yesterday               8               21
  135                       Back In The U.S.S.R.              19                3
  164                         Here Comes The Sun              58               19
  96       Sgt. Pepper's Lonely Hearts Club Band              63               12
  105         With A Little Help From My Friends              63                7
  </code></pre>
  
  <p>I'd like to rank these songs in order of popularity, so I'd like to sort them according to the following criteria: songs that reached the highest position come first, but if there is a tie, the songs that remained in the charts for the longest come first.</p>
  
  <p>I can't seem to figure out how to do this in Pandas.</p>