how to do INI-file-like substitution in pyYAML

[jim.vickroy@…]

Here is a an INI file section using string substitution to define root folder and UNC path:

[DEFAULT]
host         : sec-swds-dw.swpc.noaa.gov
satellite id : 13
root folder  : GOES%(satellite id)sSXI
UNC path     : \\%(host)s\%(root folder)s

I have been experimenting with !!python/object/apply:builtin.eval to define root folder and UNC path, but so far, I have been unsuccessful.

How can this be done in pyYAML?

Thanks