python 转换代码格式

import os

dirname="C:\\Users\\haier\\Desktop\\new"

def walk(path):

    for item in os.listdir(path):

        subpath = os.path.join(path, item)

        #subpath=subpath.replace('\\','\\\\')

        print subpath

        for i in open(subpath):

            pass#print i

        ffrom=open(subpath,'r')

        fto=open(subpath+"",'w')

        while True:

            l=ffrom.readline()

            if not l:

                break

            if 'endif' in l:

                print l

                l=l.replace('endif','end')

                print l

            elif 'endwhile' in l:

                print l

                l=l.replace('endwhile','end')

                print l

            # if '\"' in l:

                # print l

                # l=l.replace('\"','\'')

                # print l

              #  print l

               # tmp=l.split("\"")

                #l=tmp[0]+"\'"+tmp[1]

            fto.write(l)

        ffrom.close()

        fto.close()

def dele(path):

   for item in os.listdir(path):

        subpath = os.path.join(path, item)

       # subpath=subpath.replace('\\','\\\\')

        if os.path.exists(subpath+""):

            ffrom=open(subpath+"",'r')

            fto=open(subpath,'w')

            while True:

                l=ffrom.readline()

                if not l:

                    break

                fto.write(l)

            ffrom.close()

            fto.close()

            os.remove(subpath+"")

walk(dirname)

dele(dirname)