def db_delete(id):
    mysql_lib.connect()
    sql = "delete from source where id ={}".format(id)
    print(sql)
    data = mysql_lib.executeSQL(sql)
    mysql_lib.close()
    return data
def db_update(id, name):
    mysql_lib.connect()
    sql = "update source set name='{}' where id ={}".format(name, id)
    print(sql)
    data = mysql_lib.executeSQL(sql)
    mysql_lib.close()
    return data
def db_get_by_id(id):
    mysql_lib.connect()
    sql = "select * from source where id={}".format(id)
    print(sql)
    data = mysql_lib.select(sql)
    mysql_lib.close()
    return data
def db_insert(id, name, age, gender):
    mysql_lib.connect()
    insert_sql = "insert into source values('{}','{}','{}','{}')".format(
        id, name, age, gender)
    print(insert_sql)
    data = mysql_lib.executeSQL(insert_sql)
    mysql_lib.close()
    return data
def db_get_all():
    mysql_lib.connect()
    sql = "select * from source"
    data = mysql_lib.select(sql)
    mysql_lib.close()
    return data