use pyGTF.py as script to Convert of Gene annotation format Usage: python pyGTF.py --input --infmt --output --outfmt gtf2bed refseq_gff2genePred genePred2gtf use pyGTF.py as script to Extract Feature sequence Usage: python pyGTF --input --infmt --Genome --Feature --Sequence Extract coding sequence Extract untranslated region sequence use pyGTF.py as module GTF_Reader safe mode of GTF_Reader Fasta_Reader