title: Should I use open alone in python
body: <p>As title, Should I use open alone as this situation instead of using f=open(file) and f.close, because I don't know how to close file when I just using open.<br>
  More explain: I want to use just open instead of with-statement or f=open() and f.close() because it increase my mini app's size a few Megabytes but I don't know why, so that I just want to know if I use open alone and how it affect my app (or computer) if I could use it? (I'm just a newbie)</p>
  
  <pre><code>def resource_path(relative_path):  
    try:
        open(relative_path)
        base_path = os.path.abspath(".")
    except Exception:
        base_path = sys._MEIPASS
    return os.path.join(base_path, relative_path)
  </code></pre>