title: unable to connect to COM port
body: <p>im trying to read data on a COM port using python and the COM port allows me to access only one application at a time..</p>
  
  <p>example:
  if i configure the putty or hyper terminal then i can read the tag data on the putty/hyperterminal console but when i try and run the python code ,then it shows me an error</p>
  
  <p>as u see in pyserial image that i have attached below..it says "access denied'</p>
  
  <p>later if i first run the python code, the code runs without error .. but the configure for putty/hyperterminl doesnt happen.. it say "unable to open the COM port" in putty/hyperterminal</p>
  
  <p><a href="http://i.stack.imgur.com/FUALN.png" rel="nofollow">http://i.stack.imgur.com/FUALN.png</a></p>