diff --git a/reIDmodel.py b/reIDmodel.py
index 2edb3b5..ee4ea47 100755
--- a/reIDmodel.py
+++ b/reIDmodel.py
@@ -7,7 +7,6 @@
 import torch.nn as nn
 from torch.nn import init
 from torchvision import models
-from torch.autograd import Variable
 
 ######################################################################
 def weights_init_kaiming(m):
diff --git a/reid_eval/evaluate_gpu.py b/reid_eval/evaluate_gpu.py
index 29f3272..2c0167b 100755
--- a/reid_eval/evaluate_gpu.py
+++ b/reid_eval/evaluate_gpu.py
@@ -7,7 +7,6 @@
 import scipy.io
 import torch
 import numpy as np
-import time
 import os
 import matplotlib
 matplotlib.use('agg')
diff --git a/train.py b/train.py
index 80b056d..263bf62 100755
--- a/train.py
+++ b/train.py
@@ -4,7 +4,6 @@
 """
 from utils import get_all_data_loaders, prepare_sub_folder, write_loss, get_config, write_2images, Timer
 import argparse
-from torch.autograd import Variable
 from trainer import DGNet_Trainer
 import torch.backends.cudnn as cudnn
 import torch
diff --git a/trainer.py b/trainer.py
index 77d7d4f..b1e1b72 100755
--- a/trainer.py
+++ b/trainer.py
@@ -2,26 +2,23 @@
 Copyright (C) 2019 NVIDIA Corporation.  All rights reserved.
 Licensed under the CC BY-NC-SA 4.0 license (https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode).
 """
-from networks import AdaINGen, MsImageDis, VAEGen
+from networks import AdaINGen, MsImageDis
 from reIDmodel import ft_net, ft_netAB, PCB
-from utils import weights_init, get_model_list, vgg_preprocess, load_vgg16, get_scheduler
+from utils import get_model_list, vgg_preprocess, load_vgg16, get_scheduler
 from torch.autograd import Variable
 import torch
 import torch.nn as nn
-import torchvision
 import copy
 import os
 import cv2
 import numpy as np
 from random_erasing import RandomErasing
-from PIL import Image
 import random
 import yaml
 
 #fp16
 try:
-    import apex
-    from apex import amp, optimizers
+    from apex import amp
     from apex.fp16_utils import *
 except ImportError:
     print('This is not an error. If you want to use low precision, i.e., fp16, please install the apex with cuda support (https://github.com/NVIDIA/apex) and update pytorch to 1.0')
diff --git a/utils.py b/utils.py
index 0643883..27d595b 100755
--- a/utils.py
+++ b/utils.py
@@ -7,7 +7,7 @@
 from torch.autograd import Variable
 from torch.optim import lr_scheduler
 from torchvision import transforms
-from data import ImageFilelist, ImageFolder
+from data import ImageFilelist
 from reIDfolder import ReIDFolder
 import torch
 import os
diff --git a/visual_tools/show1by1.py b/visual_tools/show1by1.py
index 17e2fee..2924075 100755
--- a/visual_tools/show1by1.py
+++ b/visual_tools/show1by1.py
@@ -13,7 +13,7 @@
 import torch
 import os
 import numpy as np
-from torchvision import datasets, models, transforms
+from torchvision import datasets, transforms
 from PIL import Image
 
 name = 'E0.5new_reid0.5_w30000'