call site 9 for io.StdCapture.reset
io/test/test_stdcapture.py - line 78
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   def test_just_err_capture(self): 
       cap = self.getcapture(out=False, err=True) 
       print >>sys.stdout, "hello"
       print >>sys.stderr, "world"
->     out, err = cap.reset()
       assert err == "world\n"
       assert not out