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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 execute(sql, con, cur=None, params=None):
 """ Execute the given SQL query using the provided connection object. Parameters sql : string SQL query to be executed. con : SQLAlchemy connectable(engine/connection) or sqlite3 connection Using SQLAlchemy makes it possible to use any DB supported by the library. If a DBAPI2 object, only sqlite3 is supported. cur : deprecated, cursor is obtained from connection, default: None params : list or tuple, optional, default: None List of parameters to pass to execute method. Returns ------- Results Iterable """

    if cur is None:
        pandas_sql = pandasSQL_builder(con)
    else:
        pandas_sql = pandasSQL_builder(cur, is_cursor=True)
    args = _convert_params(sql, params)
    return pandas_sql.execute(*args)