title: How to display flags on terminal (e.g [-h])?
body: <p>Example screenshot: My <em>desired</em> output: <a href="https://i.stack.imgur.com/gwSUz.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gwSUz.jpg" alt="Image" /></a>
  I wanted to enable help flags for users of my scripts, and initially thought the solution is to use argparse:</p>
  <hr />
  <pre><code>parser = argparse.ArgumentParser(description='... blah blah ...')
  parser.add_argument('file1', help='... blah blah ...')
  parser.add_argument('file2', help='... blah blah ...')
  </code></pre>
  <p>For some reason, I can't print to the cmd prompt, since adding -h (like red circle in my example) returns a FileNotFound Error instead. Is the above code not correct?</p>
  <p>If so, could you provide me the code?
  Or are there any helpful sources (I've been searching for a definitive example, to no avail yet)</p>