def get_gt(chrom, pos):
"""
return GT by chrom and position
"""
return decode_gt(WI.get(WI.CHROM == chrom, WI.POS == pos).GT)
def get_gt(chrom, pos):
"""
return GT by chrom and position
"""
return decode_gt(WI.get(WI.CHROM == chrom, WI.POS == pos).GT)