title: Tracing pyqt emit calls
body: <p>I'm in the process of profiling some PyQt code and cProfile returns a lot of calls like the following:</p>
  
  <pre><code>ncalls  tottime  percall  cumtime  percall filename:lineno(function)
  
  15/14    0.000    0.000    0.036    0.003 {method 'emit' of 'PyQt4.QtCore.pyqtBoundSignal' objects}
  </code></pre>
  
  <p>How can I trace which of these signals are being emitted? I'm assuming those calls to <code>emit()</code> are for several different signals.  However, it'd be useful to see which actual pyqtBoundSignal object is responsible for each call.</p>
  
  <p>Also, what does <code>15/14</code> mean in the cProfile output for ncalls?</p>