title: python obtain variable name of argument in a function
body: <p>I want to do something like this:</p>
  
  <pre><code>fib = 1
  foo = (arg):
      print arg, argName # the name of the variable that was put in for arg
  foo(fib)
  </code></pre>
  
  <p>And get this returned:</p>
  
  <pre><code>1, fib
  </code></pre>