bio_io.py 文件源码

def get_target_regions_dict(targets_file):
    """ Gets the target regions from a targets file as a chrom-indexed dictionary,
    with every entry given as a list of (start, end) tuples
    """
    targets = {}
    for line in targets_file:
        info = line.strip().split('\t')
        if line.startswith('browser') or line.startswith('track') or line.startswith('-browser') or line.startswith('-track') or line.startswith('#'):
            continue
        if len(line.strip()) == 0:
            continue
        chrom = info[0]
        start = int(info[1])
        end = int(info[2])
        chrom_targs = targets.setdefault(chrom, [])
        chrom_targs.append((start, end))
    return targets