I want to create a new module for myself but I also want some colleagues to be able to use it. I started writing my docstrings in English but then I realized that it will make the module useless for some of them who are not good understanding this language.
My first idea was to type both English and, on the same docstring, Spanish. But this doesn't seem right, what if I want some Russian friends to use it too? What if I've got friends who have friends all over the world who don't have any common language to read docs in?
What's the easiest way to write and then read docstrings in multiple languages?
There is no way to make docstring translated to multiple languages but you can create documentation via Sphinx tool and translate the docs.
Sphinx itself supports gettext-based translations for generated docs, take a look on Sphinx Internationalization Guide.