Change to Python 3 compatible only

.travis.yml

@@ -1,7 +1,6 @@
 language: python
 
 python:
-    - 2.7
     - 3.3
     - 3.4
     - 3.5
@@ -73,7 +72,7 @@ install:
     - popd
 
 script:
-    - travis_wait 60 py.test --cov=kittengroomer --cov=bin tests/
+    - travis_wait 30 py.test --cov=kittengroomer --cov=bin tests/
 
 notifications:
     email:

README.md

@@ -7,7 +7,7 @@
 PyCIRCLean is the core Python code used by [CIRCLean](https://github.com/CIRCL/Circlean/), an open-source
 USB key and document sanitizer created by [CIRCL](https://www.circl.lu/). This module has been separated from the 
 device-specific scripts and can be used for dedicated security applications to sanitize documents from hostile environments 
-to trusted environments.
+to trusted environments. PyCIRCLean is currently Python 3.3+ only.
 
 # Installation
 

setup.py

@@ -19,7 +19,6 @@ setup(
         'Development Status :: 5 - Production/Stable',
         'Environment :: Console',
         'Intended Audience :: Science/Research',
-        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Topic :: Communications :: File Sharing',
         'Topic :: Security',

tests/test_kittengroomer.py

@@ -2,14 +2,12 @@
 # -*- coding: utf-8 -*-
 
 import os
-import sys
 
 import pytest
 
 from kittengroomer import FileBase, KittenGroomerBase
 from kittengroomer.helpers import ImplementationRequired
 
-PY3 = sys.version_info.major == 3
 skip = pytest.mark.skip
 xfail = pytest.mark.xfail
 fixture = pytest.fixture
@@ -89,18 +87,10 @@ class TestFileBase:
     def test_create_broken(self, tmpdir):
         with pytest.raises(TypeError):
             file_no_args = FileBase()
-        if PY3:
-            with pytest.raises(FileNotFoundError):
-                file_empty_args = FileBase('', '')
-        else:
-            with pytest.raises(IOError):
-                file_empty_args = FileBase('', '')
-        if PY3:
-            with pytest.raises(IsADirectoryError):
-                file_directory = FileBase(tmpdir.strpath, tmpdir.strpath)
-        else:
-            with pytest.raises(IOError):
-                file_directory = FileBase(tmpdir.strpath, tmpdir.strpath)
+        with pytest.raises(FileNotFoundError):
+            file_empty_args = FileBase('', '')
+        with pytest.raises(IsADirectoryError):
+            file_directory = FileBase(tmpdir.strpath, tmpdir.strpath)
         # are there other cases here? path to a file that doesn't exist? permissions?
 
     def test_init(self, generic_conf_file):

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist=py27,py35
+envlist=py35
 [testenv]
 deps=-rdev-requirements.txt
 commands= pytest --cov=kittengroomer --cov=bin