i got an error lol

~ $ cd /home/user/MyDocs
~/MyDocs $ tar xf trophease.tar
~/MyDocs $ cd trophease
~/MyDocs/trophease $ python main.py
Traceback (most recent call last):
File "main.py", line 8, in <module>
from gameview import GameView
File "/home/user/MyDocs/trophease/gameview.py", line 4, in <module>
from datastore import TrophyListModel
File "/home/user/MyDocs/trophease/datastore.py", line 6, in <module>
from netfetcher import NetFetcher
File "/home/user/MyDocs/trophease/netfetcher.py", line 3, in <module>
from PyQt4 import QtCore, QtNetwork
ImportError: cannot import name QtNetwork
~/MyDocs/trophease $