title: Check if a function is running in Python 2.7
body: <p>If I have these two fuctions:</p>
  
  <pre><code>def func1():
      print "I am function1"
  
  def func2():
      print "Function 1 is still running."
  
  while(func1 is running):
      func2()
  </code></pre>
  
  <p>How do I check if function 1 is still running?</p>