要不试试我的库
https://github.com/maliubiao/simple_http还能控制并发量， 超时时间
### 异步方式
```shell
In [21]: def print_it(x):
import pprint
....: pprint.pprint(x)
....:
In [22]: async_http.repeat_tasks([{"url": "
http://www.baidu.com", "parser": print_it}])
{'chain': None,
'chain_idx': 0,
'con': <socket._socketobject object at 0x2812bb0>,
'fd': 5,
'header_only': False,
'parser': <function print_it at 0x283da28>,
'proxy': '',
'random': '60804c2a0b053fbd',
'recv': <cStringIO.StringO object at 0x283a3e8>,
'redirect': 0,
'res_cookie': {'BAIDUID': {'domain': '.baidu.com',
'expires': 'Thu, 31-Dec-37 23:55:55 GMT',
'max-age': '2147483647',
'path': '/',
'value': 'BCB0BBBB4312D00C88BCDC9EEAAE3726:FG=1'},
'BD_LAST_QID': {'Max-Age': '1',
'path': '/',
'value': '16069052107084303783'},
'BIDUPSID': {'domain': '.baidu.com',
'expires': 'Thu, 31-Dec-37 23:55:55 GMT',
'max-age': '2147483647',
'path': '/',
'value': 'BCB0BBBB4312D00C88BCDC9EEAAE3726'}},
'res_header': {'Connection': 'Keep-Alive',
'Content-Length': '215',
'Content-Type': 'text/html',
'Date': 'Thu, 21 May 2015 15:50:43 GMT',
'Location': '
https://www.baidu.com/',
'P3P': 'CP=" OTI DSP COR IVA OUR IND COM "',
'Server': 'BWS/1.1',
'Set-Cookie': 'BAIDUID=BCB0BBBB4312D00C88BCDC9EEAAE3726:FG=1; expires=Thu, 31-Dec-37 23:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com\r\nBIDUPSID=BCB0BBBB4312D00C88BCDC9EEAAE3726; expires=Thu, 31-Dec-37 23:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com\r\nBD_LAST_QID=16069052107084303783; path=/; Max-Age=1',
'X-UA-Compatible': 'IE=Edge,chrome=1'},
'res_status': {'message': 'Moved Temporarily',
'protocol': 'HTTP/1.1',
'status': 302},
'retry': 0,
'send': <cStringIO.StringO object at 0x25fb8f0>,
'ssl': False,
'start': 1432223278.489937,
'status': 512,
'text': '<html>\r\n<head><title>302 Found</title></head>\r\n<body bgcolor="white">\r\n<center><h1>302 Found</h1></center>\r\n<hr><center>pr-nginx_1-0-221_BRANCH Branch\nTime : Wed May 20 10:35:46 CST 2015</center>\r\n</body>\r\n</html>\r\n',
'url': '
http://www.baidu.com'}
async_http Thu May 21 23:47:58 2015: 'acnt: 1, fcnt: 0, time: 0'
```