c_compiler:                    # [win]
  - vs2017                     # [win]
  - vs2017                     # [win]
  - vs2017                     # [win]
cxx_compiler:                  # [win]
  - vs2017                     # [win]
  - vs2017                     # [win]
  - vs2017                     # [win]
vc:                            # [win]
  - 14.1                       # [win]
  - 14.1                       # [win]
  - 14.1                       # [win]
python:                        # [win]
  - 2.7                        # [win]
  - 3.6                        # [win]
  - 3.7                        # [win]

c_compiler:                    # [win]
  - vs2017                     # [win]
  - vs2017                     # [win]
cxx_compiler:                  # [win]
  - vs2017                     # [win]
  - vs2017                     # [win]
vc:                            # [win]
  - 14.1                       # [win]
  - 14.1                       # [win]
python:                        # [win]
  - 3.6                        # [win]
  - 3.7                        # [win]

Drop Python 2.7 support on Windows
Drop Python 2.7 support on Windows