cpython/Doc/paper-a4/pypaper.sty

%
%  Change this to say a4paper instead of letterpaper if you want A4.
%
\newcommand{\py@paper}{a4paper}
\newcommand{\py@ptsize}{10pt}

%  These set up the fonts for the documents.
%
%  The "times" package makes the default font the PostScript Times
%  font, which makes for smaller PostScript and a font that more people 
%  like.
%
%  The "avant" package causes the AvantGarde font to be used for
%  sans-serif text, instead of the uglier Helvetica set up by the "times"
%  package.
%
\RequirePackage{times}\typeout{Using Times instead of Computer Modern.}