[oles]

Originally Posted by chaley

The template language documentation is at https://manual.calibre-ebook.com/template_lang.html. It isn't remotely python.

This Template Program Mode template does what I think you want.

{:'select(formats_sizes(), 'EPUB')'}

You might prefer this one that gives the size in kb or mb:

{:'human_readable(select(formats_sizes(), 'EPUB'))'}

Or perhaps this one that adds commas to the size:

{:'format_number(select(formats_sizes(), 'EPUB'), ',d')'}

Thank you, that work perfectly.