travis test fix

.travis.yml

@@ -1,9 +1,21 @@
 matrix:
   include:
     - os: linux
-      sudo: false
       language: python
-      python: 2.7
+      python:
+        - 3.5
+    - os: linux
+      language: python
+      python:
+        - 3.6
+    - os: linux
+      language: python
+      python:
+        - 3.7
+    - os: linux
+      language: python
+      python:
+        - 3.8
     - os: osx
       language: generic
       env: PYTHON=3.6.3
@@ -50,6 +62,6 @@ install:
 script:
   - python setup.py -q test
   - check-manifest --ignore
-    "tox.ini,test*,dev*,docs*,taxtastic/data,taxtastic/data/*"
+    "tox.ini,tests/**/*,testfiles/**/*,docs/*,taxtastic/data/*"
   - python setup.py check --metadata --restructuredtext --strict
   # - flake8 taxtastic

taxtastic/utils.py

@@ -13,6 +13,7 @@
 #    You should have received a copy of the GNU General Public License
 #    along with taxtastic.  If not, see <http://www.gnu.org/licenses/>.
 import csv
+import errno
 import logging
 import os
 import re
@@ -240,7 +241,7 @@ def has_rppr(rppr_name='rppr'):
         try:
             subprocess.check_call([rppr_name], stdout=dn, stderr=dn)
         except OSError as e:
-            if e.errno == os.errno.ENOENT:
+            if e.errno == errno.ENOENT:
                 return False
             else:
                 raise