pykat prints to stdout on import
It's considered bad form to print to stdout without explicitly directed to do so by the user, particularly on package import:
jameson.rollins@ldas-pcdev4:~ 0$ python3 -c 'import pykat'
..-
PyKat 1.2.2 _ '(
\`.|\.__...-""""-_." )
..+-----.._ / ' ` .-'
. ' `: 7/* _/._\ \ (
( '::;;+;;: `-"' =" /,`"" `) /
L. \`:::a:f c_/ n_'
..`--...___`. . ,
`^-....____: +. www.gwoptics.org/pykat
jameson.rollins@ldas-pcdev4:~ 0$