Drop Python 3.6 support and update some dependencies (#1027)

* Drop Python 3.6 support

* Removed dependency on pre 3.7 dataclasses library

* Add Python 3.10 support;

* Added Python 3.10 to the CI

* Revert upgrade of tornado

* Delete 1.hello_world.json

* Reverted Python 3.10 support due to Tornado dependency.

Author: jonasclaes

.github/workflows/build_and_deploy.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.6', '3.7', '3.9']
+        python-version: ['3.7', '3.8', '3.9']
 
     steps:
     - uses: actions/checkout@v3

setup.py

@@ -132,13 +132,12 @@ def run(self):
     'attrs>=19.3.0',
     'colorama>=0.3.9,<1.0',
     'contextlib2>=0.5.1,<1.0',
-    'dataclasses;python_version<"3.7"',
     'inflection',
     'mutablerecords>=0.4.1,<2.0',
     'oauth2client>=1.5.2,<2.0',
     'protobuf>=3.6.0,<4.0',
     'PyYAML>=3.13',
-    'pyOpenSSL>=17.1.0,<22.1',
+    'pyOpenSSL>=17.1.0,<23',
     'sockjs-tornado>=1.0.3,<2.0',
     'tornado>=4.3,<5.0',
     'typing-extensions',

tox.ini

@@ -1,10 +1,10 @@
 [tox]
-envlist = py36,py37,py39
+envlist = py37,py38,py39
 
 [gh-actions]
 python =
-    3.6: py36
     3.7: py37
+    3.8: py38
     3.9: py39
 
 [testenv]