小编use*_*682的帖子

我试图使用python-requests库抓取此页面

import requests
from lxml import etree,html

url = 'http://www.amazon.in/b/ref=sa_menu_mobile_elec_all?ie=UTF8&node=976419031'
r = requests.get(url)
tree = etree.HTML(r.text)
print tree

但我得到了上述错误.(TooManyRedirects)我试图使用allow_redirects参数但同样的错误

r = requests.get(url, allow_redirects=True)

我甚至试图发送标题和数据以及网址,但我不确定这是否是正确的方法.

headers = {'content-type': 'text/html'}
payload = {'ie':'UTF8','node':'976419031'}
r = requests.post(url,data=payload,headers=headers,allow_redirects=True)

如何解决此错误.出于好奇,我甚至尝试过美丽的汤,但我得到了不同但同样的错误

page = BeautifulSoup(urllib2.urlopen(url))

urllib2.HTTPError: HTTP Error 301: The HTTP server returned a redirect error that would lead to an infinite loop.
The last 30x error message was:
Moved Permanently

如果只是点击api,每个文档中有5个字段.但我只想要这两个字段(user_id和loc_code)所以我在字段列表中提到过.但它仍会返回一些不必要的数据,如_shards,hits,time_out等.

使用以下查询在chrome中的postman插件中发出POST请求

<:9200>/myindex/mytype/_search
{
    "fields" : ["user_id", "loc_code"],
    "query":{"term":{"group_id":"1sd323s"}}
}   

//输出

 {
        "took": 17,
        "timed_out": false,
        "_shards": {
            "total": 5,
            "successful": 5,
            "failed": 0
        },
        "hits": {
            "total": 323,
            "max_score": 8.402096,
            "hits": [
                {
                    "_index": "myindex",
                    "_type": "mytype",
                    "_id": "<someid>",
                    "_score": 8.402096,
                    "fields": {
                        "user_id": [
                            "<someuserid>"
                        ],
                        "loc_code": [
                            768
                        ]
                    }
                },
               ...
            ]
        }
    }

但我只想要文件字段(两个提到的字段)我想要_id,_index,_type.有没有办法这样做

我刚刚开始学习Falcon(http://falcon.readthedocs.org/en/latest/user/quickstart.html),但它需要运行一个Web服务器,并且文档建议使用uwsgi或gunicorn.

虽然他们已经提到如何使用它与gunicorn

$ pip install gunicorn  #install
$ gunicorn things:app   #and run app through gunicorn.

但我想用uwsgi运行这个示例应用程序.但我不知道怎么做.

我pip install uwsgi也gevent按照http://falcon.readthedocs.org/en/latest/user/install.html的建议安装了它

但现在呢.有人指导我.

设置.py

BASE_DIR = os.path.dirname(os.path.dirname(__file__))
DEBUG = True
STATIC_URL = '/static/'
STATIC_ROOT = os.path.join(BASE_DIR, 'adminstatic')

mynginx.conf /etc/nginx/sites-enabled/mynginx.conf 你可以确定我在启用站点的文件夹中只有这个 conf 文件

server {
    listen                *:80;
    server_name           _;
    access_log            /var/log/myapp.access.log;
    error_log             /var/log/myapp.error.log;

    # Django media

   location /static/ {
     alias /root/proj/myapp/adminstatic/; #your Django project's static files - amend as required
    }

    # Finally, send all non-media requests to the Django server.
    location / {
        uwsgi_pass    unix:/tmp/myapp.sock;
        include     /etc/nginx/uwsgi_params; # the uwsgi_params file you installed
    }

}

在此之后，我尝试了 collectstatic 命令， python manage.py collectstatic 它成功地收集了 adminstatic …

In [1]: a = [4,5,6]

In [2]: reduce(lambda x,y:x,a)
Out[2]: 4

In [3]: reduce(lambda x,y:x+1,a)
Out[3]: 6

In [4]: reduce(lambda x,y:x+2,a)
Out[4]: 8

In [5]: reduce(lambda x,y:x+3,a)
Out[5]: 10

我理解首先减少操作,但我对其余3行感到困惑.对于第二减少reduce(lambda x,y:x+1,a)输出应该是5,不应该吗？我已经阅读了文档https://docs.python.org/2/library/functions.html#reduce,但没有得到它.

In [6]: reduce(lambda x,y:x+y,a)
Out[6]: 15

这没关系!毫无疑问.