import subproc

app.py

@@ -7,6 +7,7 @@ import torchvision.transforms as transforms
 from torchvision import datasets
 import torch.nn.functional as F
 from torch.utils.data import DataLoader
+import subprocess
 
 BASE = {'ottawa':(45.30326753851309,-75.93640391349997),
         'ali_home':(37.88560412289598,-122.30218612514359),