language: python
python:
  - "2.7"
  - "3.3"
  - "3.4"
  - "3.5"
  - "3.6"
install:
  - "pip install ."
# command to run tests
script: py.test
notifications:
  email: false

language: python
python:
  - "3.4"
  - "3.5"
  - "3.6"
  - "3.7"
  - "3.8"
  - "3.9"
install:
  - "pip install ."
# command to run tests
script: py.test
notifications:
  email: false

Drop python v2.7 and v3.3 from tests, add v3.7–3.9
Drop python v2.7 and v3.3 from tests, add v3.7–3.9