Use only Python versions available as docker images.

Author: afoucret

.circleci/config.yml

@@ -3,11 +3,7 @@
 version: 2.1
 
 executors:
-  python-26: {docker: [{image: 'circleci/python:2.6'}]}
   python-27: {docker: [{image: 'circleci/python:2.7'}]}
-  python-30: {docker: [{image: 'circleci/python:3.0'}]}
-  python-31: {docker: [{image: 'circleci/python:3.1'}]}
-  python-32: {docker: [{image: 'circleci/python:3.2'}]}
   python-33: {docker: [{image: 'circleci/python:3.3'}]}
   python-34: {docker: [{image: 'circleci/python:3.4'}]}
   python-35: {docker: [{image: 'circleci/python:3.5'}]}
@@ -46,11 +42,7 @@ jobs:
 workflows:
   run-tests:
     jobs:
-    - build: {name: run-tests-python-2.6, executor: python-26}
     - build: {name: run-tests-python-2.7, executor: python-27}
-    - build: {name: run-tests-python-3.0, executor: python-30}
-    - build: {name: run-tests-python-3.1, executor: python-31}
-    - build: {name: run-tests-python-3.2, executor: python-32}
     - build: {name: run-tests-python-3.3, executor: python-33}
     - build: {name: run-tests-python-3.5, executor: python-34}
     - build: {name: run-tests-python-3.5, executor: python-35}