title: minimum and maximum length to delimit my line
body: <p>Sorry o-for the stupid question but I have been on it for over nearly an hour already. Here is a sample of my dataframe:</p>
  
  <pre><code>SEASON       Total
  0   2004-2005   4
  1   2005-2006   4
  2   2006-2007   1
  3   2007-2008   7
  4   2008-2009   7
  5   2009-2010   4
  6   2010-2011   4
  7   2012-2013   4
  8   2013-2014   1
  9   2014-2015   2
  10  2015-2016   3
  11  2016-2017   13
  12  2017-2018   18
  13  2018-2019   8
  </code></pre>
  
  <p>I have done this:</p>
  
  <pre><code>plt.figure(figsize=(13,6))
  plt.plot(per_year.index, per_year['Total'])
  plt.xticks(per_year.index, per_year['SEASON'].unique());
  plt.title('AVg assist PER YEAR')
  plt.axvline(x=10,color='red', linestyle='--')
  plt.axhline(y=3.8,color='orange', xmax=10)
  plt.axhline(y=11.75, xmax=10)
  plt.tight_layout()
  </code></pre>
  
  <p>All I want is to be able give a max length to my first horizontal line(where it has to stop) and minimum to my second horizontal line to say where it has to finish. I am pretty sure I can do it if change the axis to proper numbers. But I want to keep it as it is. </p>