title: Convert list of strings to space-separated string
body: <p>I am using underscores to represent the length of a unknown word. How can I print just the underscores without the brackets that represent the list?</p>
  
  <p>Basically, if I have a list of the form <code>['_', '_', '_', '_']</code>, I want to print the underscores without printing them in list syntax as <code>"_ _ _ _"</code></p>