python基本文字列圧縮

# -*- coding:utf-8 -*-
class Zipper:
    def zipString(self, iniString):
        # write code here
        if len(iniString)<=1:
            return iniString
        index=1
        last_char=iniString[0]
        acc=1
        output_seq=''
        while(index=len(iniString):
            return iniString
        else:
            return output_seq

if __name__=="__main__":
    assert Zipper().zipString("aabcccccaaa")=="a2b1c5a3"
    assert Zipper().zipString("welcometonowcoderrrrr")=="welcometonowcoderrrrr"