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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 stream_name_mapping(stream, exclude_params=['name'], reverse=False):
 """ Return a complete dictionary mapping between stream parameter names to their applicable renames, excluding parameters listed in exclude_params. If reverse is True, the mapping is from the renamed strings to the original stream parameter names. """

    filtered = [k for k in stream.params().keys() if k not in exclude_params]
    mapping = {k:stream._rename.get(k,k) for k in filtered}
    if reverse:
        return {v:k for k,v in mapping.items()}
    else:
        return mapping