title: Multi-line function calls with strings in python
body: <p>I have a function call in python 2.7:</p>
  
  <pre><code>execute_cmd('/sbin/ip addr flush dev '
               + args.interface
               + ' &amp;&amp; '
               + '/sbin/ifdown '
               + args.interface
               + ' ; '
               + '/sbin/ifup '
               + args.interface
               + ' &amp;&amp; '
               + '/sbin/ifconfig | grep '
               + args.interface)
  </code></pre>
  
  <p>This is running fine, but <code>pylint</code> is complaining with the following warning messages:</p>
  
  <pre><code>C:220, 0: Wrong continued indentation (remove 1 space).
                      + args.interface
                     |^ (bad-continuation)
  C:221, 0: Wrong continued indentation (remove 1 space).
                      + ' &amp;&amp; '
                     |^ (bad-continuation)
  C:222, 0: Wrong continued indentation (remove 1 space).
                      + '/sbin/ifconfig | grep '
                     |^ (bad-continuation)
  .
  .
  .
  </code></pre>
  
  <p>What is the correct way to call a function in python with string argument(s) which spans across multiple lines?.</p>