diff --git a/os_vif/tests/functional/base.py b/os_vif/tests/functional/base.py
index 67f428ae..c70bc92f 100644
--- a/os_vif/tests/functional/base.py
+++ b/os_vif/tests/functional/base.py
@@ -18,7 +18,6 @@ import functools
 import inspect
 import os
 import six
-import string
 import sys
 
 import eventlet.timeout
@@ -74,8 +73,7 @@ def setup_logging():
 
 def sanitize_log_path(path):
     """Sanitize the string so that its log path is shell friendly"""
-    replace_map = string.maketrans(' ()', '-__')
-    return path.translate(replace_map)
+    return path.replace(' ', '-').replace('(', '_').replace(')', '_')
 
 
 # Test worker cannot survive eventlet's Timeout exception, which effectively
diff --git a/tox.ini b/tox.ini
index 1859bb86..dfdf6e6f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,10 @@
 [tox]
-minversion = 2.0
+minversion = 3.1.1
 envlist = py37,py27,pep8
 skipsdist = True
 
 [testenv]
+basepython = python3
 usedevelop = True
 install_command = pip install -U {opts} {packages}
 setenv =
@@ -17,11 +18,9 @@ whitelist_externals = bash
 commands = stestr run --black-regex ".tests.functional" {posargs}
 
 [testenv:pep8]
-basepython = python3
 commands = flake8
 
 [testenv:venv]
-basepython = python3
 commands = {posargs}
 deps =
   {env:CONSTRAINTS_OPT}
@@ -29,29 +28,32 @@ deps =
   -r{toxinidir}/test-requirements.txt
   -r{toxinidir}/doc/requirements.txt
 
-[testenv:functional]
+[testenv:functional-py27]
 basepython = python2.7
 setenv =
     {[testenv]setenv}
 commands =
     stestr run --black-regex ".tests.unit" '{posargs}'
 
+[testenv:functional]
+setenv =
+    {[testenv]setenv}
+commands =
+    stestr run --black-regex ".tests.unit" '{posargs}'
+
 [testenv:docs]
-basepython = python3
 deps =
   {env:CONSTRAINTS_OPT}
   -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -W -b html doc/source doc/build/html
 
 [testenv:releasenotes]
-basepython = python3
 deps =
   {env:CONSTRAINTS_OPT}
   -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
 
 [testenv:lower-constraints]
-basepython = python3
 deps =
   -c{toxinidir}/lower-constraints.txt
   -r{toxinidir}/requirements.txt