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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 remove_highdepth_regions(in_file, items):
 """Remove high depth regions from a BED file for analyzing a set of calls. Tries to avoid spurious errors and slow run times in collapsed repeat regions. Also adds ENCODE blacklist regions which capture additional collapsed repeats around centromeres. """

    encode_bed = tz.get_in(["genome_resources", "variation", "encode_blacklist"], items[0])
    if encode_bed and os.path.exists(encode_bed):
        return _remove_regions(in_file, [encode_bed], "glimit", items[0])
    else:
        return in_file