use python3 format
@@ -141,7 +141,7 @@ def init_contracts(nodes, args):
f.write('{}\n'.format(params[4]))
if args.economical_model:
params[8] = ECONOMICAL_MODELS[args.economical_model]
- print '[economical-model]: {}'.format(params[8])
+ print('[economical-model]: {}'.format(params[8]))
extra = ct.encode_constructor_arguments(params)
else:
extra = b''
