请教一个 requests 使用代理的问题!

[coolloves]

#!/usr/bin/python

import requests
import random

def rewrite(ip):
return "{\'http\'"+":"+"\'http://"+ip+"\'}" #格式化代理

def req(url,p=None):
r = None
headers = {'User-Agent':'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) chrome/47.0.1453.110 Safari/5
37.36','Refefer':url}
s = requests.Session()
with open("/home/tech/proxyok","r") as f:
ips=f.read().strip('\n').split()
ipss = map(rewrite,ips)
proxy = random.choice(ipss)

if proxy:
try:
r = s.get(url,headers=headers,proxies=proxy,timeout=3)
except Exception,e:
print e
else:
try:
r = s.get(url,headers=headers)
except Exception,e:
print e
return r

if __name__ == "__main__":
print req('http://baidu.com')

运行后报'str' object has no attribute 'get'

我以为是 requests.get 这个 get 的问题,后来把 try 去掉后,追踪到以下错误,但是我不明白是什么原因,新人,请指点一下,谢谢!
Traceback (most recent call last):
File "httpreq.py", line 31, in <module>
print req('http://xueqiu.com')
File "httpreq.py", line 20, in req
r = s.get(url,headers=headers,proxies=p,timeout=3)
File "/usr/lib/python2.6/site-packages/requests/sessions.py", line 310, in get
return self.request('GET', url, **kwargs)
File "/usr/lib/python2.6/site-packages/requests/sessions.py", line 279, in request
resp = self.send(prep, stream=stream, timeout=timeout, verify=verify, cert=cert, proxies=proxies)
File "/usr/lib/python2.6/site-packages/requests/sessions.py", line 374, in send
r = adapter.send(request, **kwargs)
File "/usr/lib/python2.6/site-packages/requests/adapters.py", line 155, in send
conn = self.get_connection(request.url, proxies)
File "/usr/lib/python2.6/site-packages/requests/adapters.py", line 119, in get_connection
proxy = proxies.get(urlparse(url).scheme)
AttributeError: 'str' object has no attribute 'get'

[aitaii]

https://www.v2ex.com/t/282290

[lxy]

报错信息写得很清楚了，一步步往上看，你的 proxy 数据类型不对。

[mringg]

传入的应该是 dict 而不是 str

[Kisesy]

看看你注释的地方

[coolloves]

我传入的是 dict 啊,所以我才比较纳闷
[root@localhost sh]# python httpreq.py
{'http':'http://116.226.98.54:8118'} 这个是我打印出来的 proxy
True
'str' object has no attribute 'get'
None

[coolloves]

@Kisesy
我的代理抓下来是 ip:port 格式保存的
我那个注释就是把代理改成{'http':'http://116.226.98.54:8118'} 格式

[Kisesy]

你确定这是 dict ?
return "{\'http\'"+":"+"\'http://"+ip+"\'}"

这样写不好吗
def rewrite(ip):
return {'http':'http://' + ip}

[coolloves]

我那个 rewrite 返回的是 str,不是 dict,所以 proxies 传入的类型错误了,我刚看了下 p 的类型是 str,不是 dict,多谢各位.

[coolloves]

@Kisesy 是的,我那样返回的是 str,刚学 python,多谢指点.

[SuperFashi]

@coolloves 虽然你是传了个 str 回去，不过 eval 一发即可

[siteshen]

@SuperFashi 别带坏初学者！！

[SlipStupig]

@SuperFashi eval 是方便，但是不安全，能少用就少用