importpysamnb_seq=0samfile=pysam.AlignmentFile("/home/theo/Documents/alternance/Projet Alternance/dijex8000.bam","rb")forreadinsamfile.fetch("chrY"):print(read)nb_seq+=1print(nb_seq)samfile.close()#for pileupcolumn in samfile.pileup("chr1", 1):# print("\ncoverage at base %s = %s" % (pileupcolumn.pos, pileupcolumn.n))# for pileupread in pileupcolumn.pileups:# if not pileupread.is_del and not pileupread.is_refskip:# query position is None if is_del or is_refskip is set.# print('\tbase in read %s = %s' %# (pileupread.alignment.query_name, #pileupread.alignment.query_sequence[pileupread.query_position]))#samfile.close()