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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 mkFilter(parts):
 """Convert a filter-convertable thing into a filter @param parts: a filter, an endpoint, a callable, or a list of any of these. """

    # Convert the parts into a list, and pass to mkCompoundFilter
    if parts is None:
        parts = [BasicServiceEndpoint]

    try:
        parts = list(parts)
    except TypeError:
        return mkCompoundFilter([parts])
    else:
        return mkCompoundFilter(parts)