call site 15 for io.StdCapture.reset
io/test/test_stdcapture.py - line 20
16
17
18
19
20
21
22
   def test_capturing_reset_simple(self):
       cap = self.getcapture()
       print "hello world"
       print >>sys.stderr, "hello error"
->     out, err = cap.reset()
       assert out == "hello world\n"
       assert err == "hello error\n"