call site 8 for log.Producer.__call__
log/testing/test_log.py - line 147
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   def test_log_file_delayed_create(self):
       logfilefn = tempdir.join('log_create.out')
   
       py.log.setconsumer("default", py.log.Path(logfilefn,
                                       delayed_create=True, buffering=0))
       assert not logfilefn.check()
->     py.log.default("hello world #1") 
       lines = logfilefn.readlines() 
       assert lines == ['[default] hello world #1\n']