def splitKeywordDict(dct):
    """Take a keyword dict and return a tuple of the form (userDict,
    reservedDict) """
    userDict = {}
    reservedDict = {}
    for key, value in dct.items():
        if key[0] == '_':
            reservedDict[key] = value
        else:
            userDict[key] = value
    return userDict, reservedDict
