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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_requirement(iterable):
 """Actually parse the requirements, from file or manually specified."""

    deps = {}
    for line in iterable:
        line = line.strip()
        if not line or line[0] == '#':
            continue

        parsed_req = parse_fade_requirement(line)
        if parsed_req is None:
            continue
        repo, dependency = parsed_req
        deps.setdefault(repo, []).append(dependency)

    return deps