title: Linking a command line application to a tkinter GUI
body: <p>I am currently trying to write a User Interface for a program, that is only used via command line. It has several mandatory and optional parameters but you really only need one line to execute it. Now I am wondering how I can "link" my python script to the command line and make it execute the program when I click a "Run-Button". </p>
  
  <p>I am just starting to get into TKinter and Python programming, so I need very basic instructions. </p>
  
  <p>I am on a Linux-System (Ubuntu 16.10) using Python 3.5 and Tkinter.</p>
  
  <p>Thank you. </p>