Update app.py

app.py

@@ -5,6 +5,7 @@ from ocean_lib.ocean.ocean import Ocean
 from ocean_lib.web3_internal.wallet import Wallet
 from ocean_lib.web3_internal.currency import from_wei # wei is the smallest denomination of ether e.g. like cents
 from ocean_lib.web3_internal.currency import pretty_ether_and_wei
+from wallet import get_wallet
 
 config = Config('config.ini')
 ocean = Ocean(config)