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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_slab_stats(slab_stats):
 """Convert output from memcached's `stats slabs` into a Python dict. Newlines are returned by memcached along with carriage returns (i.e. '\r\n'). "STAT 1:chunk_size 96\r\nSTAT 1:chunks_per_page 10922\r\nSTAT " "active_slabs 1\r\nSTAT total_malloced 1048512\r\nEND\r\n") { 'slabs': { 1: { 'chunk_size': 96, 'chunks_per_page': 10922, }, }, 'active_slabs': 1, 'total_malloced': 1048512, } """

    stats_dict = {'slabs': defaultdict(lambda: {})}

    for line in slab_stats.splitlines():
        if line == 'END':
            break
        # e.g.: "STAT 1:chunks_per_page 10922"
        cmd, key, value = line.split(' ')
        if cmd != 'STAT':
            continue
        # e.g.: "STAT active_slabs 1"
        if ":" not in key:
            stats_dict[key] = int(value)
            continue
        slab, key = key.split(':')
        stats_dict['slabs'][int(slab)][key] = int(value)

    return stats_dict