@@ 2,7 2,7 @@ 
 import json
 import os
 from pathlib import Path
-from subprocess import check_output
+from subprocess import CalledProcessError, check_output
 from sys import stderr
 from zipfile import ZipFile
 

          
@@ 15,7 15,7 @@ if check_output(['hg', 'stat']):
     exit(1)
 try:
     check_output(['hg', 'push'])
-except subprocess.CalledProcessError as e:
+except CalledProcessError as e:
     # exit code 1 = nothing to push
     if e.returncode != 1:
         raise