title: Calling a C/C++ code from Python with an argument
body: <p>I read similar posts but nothing specific to this. Or maybe my logic is incorrect and you can correct me please. </p>
  
  <p>What I'm trying to do:</p>
  
  <p>Write python code, that then calls an already compiled C or C++ code. But how would I pass an argument to that C/C++ script given that it's already been compiled? </p>
  
  <p>I have a program in Python that manipulates an Excel file. And then at some point I need to search through, append, and create an array of 10,000 cells. I figured C/C++ would make this faster since python is taking some time to do that. </p>
  
  <p>Help please.</p>