diff --git a/tldp/doctypes/common.py b/tldp/doctypes/common.py
index a66b890..daba514 100644
--- a/tldp/doctypes/common.py
+++ b/tldp/doctypes/common.py
@@ -1,6 +1,6 @@
 #! /usr/bin/python
 
-from __future__ import print_function
+from __future__ import absolute_import, division, print_function
 
 import string
 from ..utils import logger
diff --git a/tldp/guess.py b/tldp/guess.py
index 08c859d..7586946 100644
--- a/tldp/guess.py
+++ b/tldp/guess.py
@@ -1,6 +1,6 @@
 #! /usr/bin/python
 
-from __future__ import print_function
+from __future__ import absolute_import, division, print_function
 
 import os
 import inspect
@@ -46,7 +46,7 @@ def guess(thing):
     # -- for this extension, multiple document types, probably SGML, XML
     #
     logger.debug("Extension is %s for %s; multiple possible document types.",
-                ext, fin.name)
+                 ext, fin.name)
     for doctype in possible:
         logger.debug("Extension is %s for %s; %s.", ext, fin.name, doctype)
 
@@ -58,7 +58,7 @@ def guess(thing):
 
     if not guesses:
         logger.warning("Extension is %s for %s; no matching signature found.",
-                    ext, fin.name)
+                       ext, fin.name)
         return None
     if len(guesses) == 1:
         _, doctype = guesses.pop()
diff --git a/tldp/sources.py b/tldp/sources.py
index c153b48..7ebc8bb 100644
--- a/tldp/sources.py
+++ b/tldp/sources.py
@@ -1,6 +1,6 @@
 #! /usr/bin/python
 
-from __future__ import print_function
+from __future__ import absolute_import, division, print_function
 
 import os
 import sys
diff --git a/tldp/utils.py b/tldp/utils.py
index 8812b9a..7594891 100644
--- a/tldp/utils.py
+++ b/tldp/utils.py
@@ -1,5 +1,7 @@
 #! /usr/bin/python
 
+from __future__ import absolute_import, division, print_function
+
 import sys
 import logging
 
@@ -12,5 +14,9 @@ def getLogger(**opts):
 
 logger = getLogger()
 
+
+def runner(cmd, env, stdin, stdout, stderr):
+    pass
+
 #
 # -- end of file