title: Correct style for line breaks when chaining methods in Python
body: <p>I have some code like this. Should the break occur before the periods or after?</p>
  
  <pre><code># before
  my_var = somethinglikethis.where(we=do_things).where(we=domore).where(we=everdomore)
  
  # this way
  my_var = somethinglikethis.where(we=do_things) \
                            .where(we=domore) \
                            .where(we=everdomore)
  
  # or this way
  my_var = somethinglikethis.where(we=do_things). \
                             where(we=domore). \
                             where(we=everdomore)
  </code></pre>