Compiles a query
    Syntax:
        TBA

def compile_query(query: dict) -> PyQuery:
    """
    Compiles a query
    Syntax:
        TBA
    """

    def _pair_to_dict(pair):
        if isinstance(pair, dict):
            return pair
        return {pair[0]: pair[1]}

    def _reduce(pair):
        try:
            return {'and': (_pair_to_dict(pair[0]), _pair_to_dict(pair[1]))}
        except (KeyError, IndexError):
            return _pair_to_dict(pair)

    def _get_first_pair(d: dict):
        return list(query.items())[0]

    if len(query) < 2:
        return compile_single_item(*_get_first_pair(query))
    try:
        reduced = reduce(lambda x, y: _reduce((x, y)), query.items())
    except KeyError:
        print(query)
        reduced = query
        raise
    return compile_single_item(*_get_first_pair(reduced))