python implemention javascript encodeURIComponent

#!/usr/bin/env python
#encoding=utf-8
original=""" !@#$%^&*()-_=+:;."'\/?<>~[]{}`"""
transfer="""%20,!,%40,%23,%24,%25,%5E,%26,*,(,),-,_,%3D,%2B,%3A,%3B,.,%22,',%5C,%2F,%3F,%3C,%3E,~,%5B,%5D,%7B,%7D,%60"""
test="select * from opponent_product"
#select%20*%20from%20opponent_product&key=select%20*%20from%20opponent_product
O=list(original)

print len(O)
T=transfer.split(",")
print O
print T
def gen_mapping(O,T):
    dict={}
    for o,t in zip(O,T):
        dict[o]=t
    return dict
print gen_mapping(O,T)
def encodeURIComponent(input):
    _input=list(input)
    mapping=gen_mapping(O,T)
    for index,elem in enumerate(_input):
        if elem in mapping:
            _input[index]=mapping[elem]
    return "".join(_input)
       
def decodeURIComponent(input):
    pass

print len(transfer.split(","))


r=encodeURIComponent(test)
print r