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[Spark] [Python] Example of a dataframe in which a limited record is taken:SqlContext = Hivecontext (SC)PEOPLEDF = SqlContext.read.json ("People.json")Peopledf.limit (3). Show ()===[Email protected] ~]$ HDFs dfs-cat People.json{"Name": "Alice", "Pcode": "94304"}{"Name": "Brayden", "age": +, "Pcode": "94304"}{"Name": "Carla", "age": +, "Pcoe": "10036"}{"Name": "Di
Create an example of a book, author, or publisher: From django.db import Modelsclass Publisher (models. Model): name = models. Charfield (max_length=30) address = models. Charfield (max_length=50) City = models. Charfield (max_length=60) state_province = models. Charfield (max_length=30) country = models. Charfield (max_length=50) website = models. Urlfield () class Author (models. Model): first_name = models. Charfield (max_length=30) last_
)# Alex_jack_rain_jinxin_|mack-oldboyS62 = Re.sub (' \d+ ',' _ ', S6,Count=2)Print (S62)# Alex_jack_rain31jinxin50|mack-oldboyS7 =' 9-2*5/3+7/3*99/4*2998+10*568/14 'S71 = Re.split (' [-\*/+] ', S7)Print (S71)# [' 9 ', ' 2 ', ' 5 ', ' 3 ', ' 7 ', ' 3 ', ' 99 ', ' 4 ', ' 2998 ', ' 10 ', ' 568 ', ' 14 ']S72 = Re.split (' [-\*/+] ', S7,maxsplit=2)Print (S72)# [' 9 ', ' 2 ', ' 5/3+7/3*99/4*2998+10*568/14 ']# Fullmatch compile compile to improve efficiencyPattern = Re.compile (' \[
Example of the RDD FlatMap operation:FlatMap, performs a function operation on each element (line) of the original Rdd, and then "beats" each line[Email protected] ~]$ HDFs dfs-put cats.txt[Email protected] ~]$ HDFs dfa-cat cats.txtError:could not find or load main class DFA[Email protected] ~]$ HDFs dfs-cat cats.txtTh
. code) # add the mail method mail (e. code) failed t urllib. error. URLError as err: print (err. reason) # add the mail method mail (err. reason) Done! Conclusion There are only 50 lines of code, and the program can be improved: For example, the agent list is automatically obtained, the interface is added, and multithreading is extended. Finally, I would like to share my work with other friends. import urllib2import timeitimport thread import timei =
default content inherited from Base.html is displayed. {% Block content%}{% include'ad.html'%} #引用ad. html template. this isIndex page,welcome! {% Endblock%}Change the function that processes the request to return the template file to the client: (Of course, the content is rendered)In the app/views.py from Import def Home (Request): return'home.html' )Viii. Start-up project:[email protected] mysite]$Python
POST login. 3, password some are sent in clear text, some are sent after encryption. Some websites even use dynamic encryption, including a lot of other data encryption information, only by viewing the JS source code to obtain encryption algorithm, and then to crack encryption, very difficult. 4, most Web sites are similar to the overall process, there may be some different details, so there is no guarantee that the other site login Success III, using selenium and Phantomjs
:53 2016Thread-3 starting at Tue Dec 20 23:22:53 2016Thread-4 starting at Tue Dec 20 23:22:53 2016Thread-5 starting at Tue Dec 20 23:22:53 2016Thread-6 starting at Tue Dec 20 23:22:53 2016Thread-1 end at Tue Dec 20 23:22:55 2016Remaining thread-2,thread-3,thread-4,thread-5,thread-6Thread-4 end at Tue Dec 20 23:22:55 2016Remaining thread-2,thread-3,thread-5,thread-6Thread-2 end at Tue Dec 20 23:22:55 2016Remaining thread-3,thread-5,thread-6Thread-5 end at Tue Dec 20 23:22:56 2016Remaining thread-
-8ImportSockethost="'Port= 51421s=Socket.socket (socket.af_inet, socket. SOCK_STREAM) s.setsockopt (socket. Sol_socket, SOCKET. SO_REUSEADDR,1) S.bind ((host, Port)) S.listen (1)#there's only one waiting to be processed at a timePrint "Server is running on port%d, press Ctrl-c to terminate."%Port while1: Clientsock, Clientaddr=s.accept () clientfile= Clientsock.makefile ('RW', 0) clientfile.write ("Welcome,"+ STR (CLIENTADDR) +"\ n") Clientfile.write ("Please enter a string:") Line=clientfile.re
=self.get_all_group ()For I in All_group:Self.get_group_info (i)#实例化类 parameter passed as a cookieQ=qqgroup (' pgv_pvid=1745803612; pgv_pvi=9485686784; Rk=vrzxxdy1y7; _qpsvr_localtk=0.8876927078641847; pgv_si=s3971407872; PTISP=CNC; PTCZ=E42F943C39B23E3D7A94D9DEAC0DE69388506BBB9B09000F197B8681624F70AC; uin=o0106148088; [Email protected]; pt2gguin=o0106148088; p_uin=o0106148088; Pt4_token=vrwh5lwxxuae0oaji5dr-xet8f13t5oheqfwvi3cjjq_; P_skey=spanebpdwjm
This article mainly describes the Python read the message data and download an example of the attachment of the relevant information, here to provide an example of implementation, to help you learn to understand this part of the content, the need for friends can refer to the following Detailed Python implementation re
[Email protected] ~]$ HDFs dfs-cat People.json{"Name": "Alice", "Pcode": "94304"}{"Name": "Brayden", "age": +, "Pcode": "94304"}{"Name": "Carla", "age": +, "Pcoe": "10036"}{"Name": "Diana", "Age": 46}{"Name": "Etienne", "Pcode": "94104"}[Email protected] ~]$HDFs Dfs-cat Pcodes.json{"Pcode": "10036", "City": "New York", "state": "NY"}{"Pcode:" 87501 "," City ":" Santa Fe "," state ":" NM "}{"Pcode": "94304",
First QQ Mail with a third-party client sent to request a verification code. Instead of the QQ password.The authorization code is the password you want to use to sign in nextThen the rest of the work is very simple. The following simple code is attached:#coding: Utf-8import smtplibfrom email.mime.text Import mimetext_user = "[email protected]" _pwd = "12341234134" # Use the authorization code _to = "[email
subclasses can implement data persistence, define save, load, revert three interfaces. Mozillacookiejar LwpcookiejarTwo implementation classes, the inheritance relationship is as follows:Mozillacookiejar Lwpcookiejar II. Use Simple exampleA simple code of use#!/usr/bin/env python# Encoding:utf-8Import requestsImport Cookieliburl = ' http://www.baidu.com/'Jar = Cookielib. Lwpcookiejar (' Cookie.txt ')# Try to load cookies# Ask a question, why do yo
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