I tried to produce Python3 code via Swagger – but was surprised to see, that swagger-ui and swagger-codegen have slightly different opinions about how to interpret my swagger stuff. I had to patch my produced files to let codegen produce the Python3 code.
I looked at the produced code and in general this code was pretty simple. I decided to use the swagger-Python3-runtime, but produce all other files (API calls, class structures) via PUM.
Adding some cookie support to the swagger-Python3-runtime and after one day of work the first programs could be written to query our Gemstone/REST system via python.
As an IDE I used the community edition PyCharm (from JetBrains) and added lots of type hints to the produced code, so that PyCharm was able to offer Intellisense support.
The reason for the choice of Python was pretty obvious: large community, large infrastructure and an accepted language.