class for general code refactoring

CodeRefactor.py

import re

class CodeRefactor():
    def __init__(self):
        pass

    def __pos2keyRepl(self, m, maxArgs=32):
        args = funcList[m.group(1)]
        sub = [ args[key]+'='+val for val, key in zip(m.groups()[1:], range(0,32)) ]
        return m.group(1)+'('+','.join(sub)+')'

    def pos2key(self, fileList, funcList, namingFunc , maxArgs=32):
        funcPatternList = ['({})\({}\)'.format(func, ('(.+?),'*len(funcList[func]))[:-1] ) for func in funcList]
        
        for file in fileList:
            with open(file, 'r') as f:
                new_content = f.read()

                for funcPattern in funcPatternList:
                    new_content = re.sub(funcPattern, self.__pos2keyRepl, new_content)

            with open(namingFunc(file), 'w') as f2:
                f2.write(new_content)
        
fileList = ['main.py']
funcList = {
    'SSH': ['hostname','username','password'],
    'CommandGenerator': ['id','pw','address']
            }

a = CodeRefactor()
#a.pos2key(fileList ,funcList, lambda x: x)