title: How to open a file of different extension with notepad in python
body: <p>I have a .fhx file that I could open normally with notepad but I want to open it using Python. I have tried subprocess.popen which I got online but I keep getting errors. I also want to be able to read the contents of this file like a normal text file like how we do in f=open("blah.txt", "r") and f.read(). Could anyone guide me in the right direction ?</p>
  
  <pre><code>    import subprocess
      filepath = "C:\Users\Ch\Desktop\FHX\fddd.fhx"
      notePath = r'C:\Windows\System32\notepad.exe'
      subprocess.Popen("%s %s" % (notePath, filepath))
  </code></pre>