bpo-10938: Added links to to system specific strftime docs by chkumar246 · Pull Request #155 · python/cpython (original) (raw)
A similar note exists just over the table in the docs:
The full set of format codes supported varies across platforms, because Python calls the platform C library’s strftime() function, and platform variations are common. To see the full set of format codes supported on your platform, consult the strftime(3) documentation.
I believe that is clear enough. Also, specifying links to different platforms sets an unwanted precedent for documenting platform depended features in Python.