update python versions

Author: willforde

.travis.yml

@@ -16,6 +16,8 @@ matrix:
       env: TOXENV=py38
     - python: "3.9"
       env: TOXENV=py39
+    - python: "3.10"
+      env: TOXENV=py39
     - env: TOXENV=flake8
 
 install:

setup.py

@@ -44,6 +44,10 @@ def extract_variable(filename, variable):  # type: (str, str) -> str
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
         'Topic :: Text Processing :: Markup :: HTML',
         'Topic :: Software Development :: Libraries :: Python Modules'
     ],

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{27,36,37,38,39},flake8
+envlist = py{27,36,37,38,39,310},flake8
 skip_missing_interpreters = true
 
 [testenv]