title: Introspect calling object
body: <p>How do I introspect <code>A</code>'s instance from within <code>b.func()</code> (i.e. <code>A</code>'s instance's <em><code>self</code></em>):</p>
  
  <pre><code>class A():
      def go(self):
          b=B()
          b.func()
  
  class B():
      def func(self):
          # Introspect to find the calling A instance here
  </code></pre>