in safe_rl/utils/logx.py [0:0]
def get_stats(self, key):
"""
Lets an algorithm ask the logger for mean/std/min/max of a diagnostic.
"""
v = self.epoch_dict[key]
vals = np.concatenate(v) if isinstance(v[0], np.ndarray) and len(v[0].shape)>0 else v
return mpi_statistics_scalar(vals)