BioPython

https://biopython.org/

Seq, SeqIO, SeqRecord

http://biopython.org/DIST/docs/tutorial/Tutorial.html#sec17

KEGG

http://biopython.org/DIST/docs/tutorial/Tutorial.html#sec358

GenomeDiagram

http://biopython.org/DIST/docs/tutorial/Tutorial.html#sec340