scrapy for python 3

scrapy article in front of us about spiders has said how to rewrite start_request, we let the first request to obtain the user list and obtain user informationThis time we start the crawler again.We will see is a 401 error, and the solution is actually the problem of the request header, from here we can also see that the request header contains a lot of information will affect the information we crawl this site, so when we often directly request the

cookie or the website put in the field of the session completely to bring back, The cookie in this is very important, when we visit, regardless of whether we have login, the server can put some value in our header, we use Pycharm debug to see the session:You can see that there are a lot of cookies in it, the server sends us these cookies when we get the verification code, it must be passed on to the server before the authentication is successful. If you use requests when you log in, it will set

) arora/0.3 (change:287 c9dfb30)", "mozilla/5.0 (X11; U Linux; En-US) applewebkit/527+ (khtml, like Gecko, safari/419.3) arora/0.6", "mozilla/5.0 (Windows; U Windows NT 5.1; En-us; Rv:1.8.1.2pre) gecko/20070215 k-ninja/2.1.1", "mozilla/5.0 (Windows; U Windows NT 5.1; ZH-CN; rv:1.9) gecko/20080705 firefox/3.0 kapiko/3.0", "mozilla/5.0 (X11; Linux i686; U;) gecko/20070322 kazehakase/0.4.5", "mozilla/5.0 (X11; U Linux i686; En-us; rv:1.9.0.8) Gecko fedora/1.9.0.8-1.fc10 kazehakase/0.

key_words:s = Lagoutype.search () # Instantiation of search query for Elasticsearch (search engine) class S = s.suggest (' my_suggest ', Key_words, completion={ "Field": "Suggest", "fuzzy": {"fuzziness": 1}, "Size": 5}) su Ggestions = S.execute_suGgest () for match in Suggestions.my_suggest[0].options:source = Match._source Re_datas.appen D (source["title"]) return HttpResponse (Json.dumps (Re_datas), content_type= "Application/json") def Searchluoji ( Request): # search Logic proces

This example describes Python's method of disguising as http/1.1 when using scrapy acquisition. Share to everyone for your reference. Specifically as follows: Add the following code to the settings.py file Copy Code code as follows: downloader_httpclientfactory = ' Myproject.downloader.HTTPClientFactory ' Save the following code to a separate. py file Copy Code code as follows: From scrapy.core.downloader.webclient import Scrapyhtt

Scrapy is a python-only web crawler tool that currently has only python2.x versions. Installation 　　Scrapy need more support cubby, installation is very cumbersome, test directly with Easy_install or PIP installation will automatically download the support library installation needs, but because the network or other reasons always install failure, i

Python uses the proxy server method when collecting data based on scrapy, pythonscrapy This example describes how to use a proxy server to collect data from Python Based on scrapy. Share it with you for your reference. The details are as follows: # To authenticate the proxy, # you must set the Proxy-Authorization hea

"). Extract ()url = "Https://accounts.douban.com/login"Print ("Saving captcha picture")Captchapicfile = "F:/20_python/2000_pythondata/selfstudy/douban/douban/captcha.png"Urllib.request.urlretrieve (captcha[0],filename = captchapicfile)Print ("Open picture file, view verification code, enter word ...")Captcha_value = input ()data = {"Form_email": "XXXX","Form_password": "XXXX","Captcha-solution": Captcha_value,}Print ("Logging in ...")return [Formrequest.from_response (response,meta={"Cookiejar":

In the Win7 64-bit system, Python version 3.6, the installation of Scrapy errors error, error is as follows:The solution is as follows:Download the file in the https://www.lfd.uci.edu/~gohlke/pythonlibs/#twisted TWISTED-18.7.0-CP36-CP36M-WIN_AMD64.WHL , where the CP is followed by the Python version, and AMD numbers represent the number of Windows system bits,Exe

When analyzing and processing selections, it is also important to note that JS on the page may modify the DOM tree structure. (a) Use of GitHub Because the previous use of win, did not use the shell. Currently just understand. Added later. Find a Few good tutorials GitHub Ultra-detailed text guide http://blog.csdn.net/vipzjyno1/article/details/22098621 GitHub Modify Submit Http://www.360doc.com/content/12/0602/16/2660674_215429880.shtml I'll add !!!!! later. (ii) Use of Firebug in Firefox I've