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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def parse_align_file(file_in):
 """ Parse sam files with aligned sequences """

    loc_id = 1
    bedfile_clusters = ""
    bamfile = pybedtools.BedTool(file_in)
    bed = pybedtools.BedTool.bam_to_bed(bamfile)
    for c, start, end, name, q, strand in bed:
        loc_id += 1
        bedfile_clusters += "%s\t%s\t%s\t%s\t%s\t%s\n" % \
                            (c, start, end, name, loc_id, strand)
    return bedfile_clusters