def _installation_trace(self, origin):
def _wrapped(frame_unused, event_unused, arg_unused):<EOL><INDENT>sys.settrace(None)<EOL>fn = self._start_tracer(origin)<EOL>if fn:<EOL><INDENT>fn = fn(frame_unused, event_unused, arg_unused)<EOL><DEDENT>return fn<EOL><DEDENT>return _wrapped<EOL>
Called on new threads, installs the real tracer.