How to get Heliocentric positions from pyswisseph or kerykeion library

I am using kerykeion library to get aspect but i think it get aspect using Geocenteric position is there any way to get Heliocenteric position.

kerykeion internally uses pyswisseph and i can see there is Flag available but not sure how to use that

Flag is

FLG_HELCTR

I can see it support changing overserve positions as listed on this site

https://www.astro.com/cgi/swetest.cgi?arg=-h&p=0

You can pass Flag

-helio

Any help would be really appreciated to get Heliocentric position using either library

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