unicode fix in python2

tuf/repo/signercli.py

@@ -116,6 +116,10 @@ def _prompt(message, result_type=str):
     caller.
 
   """
+  # we need to use unicode in python 2
+  python_version = sys.version_info[0]
+  if python_version==2:
+    str = unicode
 
   return result_type(raw_input(message))
 

tuf/tests/system_tests/test_endless_data_attack.py

@@ -42,11 +42,14 @@
 import tuf
 from tuf.interposition import urllib_tuf
 
+import logging
+
 
 
 # Disable logging.
 util_test_tools.disable_logging()
 
+logger = logging.getLogger('tuf')
 
 
 class EndlessDataAttack(Exception):