import pandas as pd
import argparse

parser = argparse.ArgumentParser()
parser.add_argument("-in", "--input", help="blast outfmt 6 formata",  required=True)
args = parser.parse_args()
read_file = args.input

header_outfmt6 = ['qseqid','sseqid','pident','length','mismatch','gapopen','qstart','qend','sstart','send','evalue','bitscore']
df = pd.read_csv(read_file, sep='t',header = None,names = header_outfmt6)
df_2 = df.drop_duplicates(subset=['sseqid','sstart','send'])

out_csv = read_file+'.filtred'
df_2.to_csv(out_csv, sep='t')