请教下 f = f.replace('\n', '\r')这条没起作用

!/usr/bin/env python

-- coding: utf-8 --

import json

import string

import sys

reload(sys)

sys.setdefaultencoding('utf-8')

def readfile(f):

with open(f, 'r') as f:

return f.readlines()

f = f.replace('\n', '\r')

def main():

f = sys.argv[1]
debugfile = readfile(f)
for i in debugfile:
    print json.dumps(eval(i),sort_keys=True, indent=2, ensure_ascii=False, encoding='utf8')

if name == 'main':

main()