def begin(self):
    self._last_step = None
    self._global_step_tensor = contrib_variables.get_global_step()
    for m in self._monitors:
        m.begin(max_steps=None)
def begin(self):
    self._last_step = None
    self._global_step_tensor = contrib_variables.get_global_step()
    for m in self._monitors:
        m.begin(max_steps=None)