python dict的保存方法 [dict_saving]

numpy保存

if os.path.exists('map_mcdict.npy'):
    map_dict=np.load('map_mcdict.npy',allow_pickle=True).item()
else:
    map_dict=dict()
====   operation start ====
====   operation end   ====
np.save('map_mcdict.npy',map_dict)