periscope captures

1. Capture camera and real-time displayImport Cv2import numpy as Npimport pickleimport matplotlib.pyplot as Pltcap = Cv2. Videocapture (0) while True: ret,frame = Cap.read () # We operations on the frame come here Gray = Cv2.cvtcolor ( Frame, Cv2. Color_bgr2gray) # Display The resulting frame cv2.imshow (' frame ', gray) if Cv2.waitkey (1) 0xFF = = Ord ( ' Q '): Break # When everything done, release the Capturecap.release () cv2.destroyallwindows ()　2. Capture the pictu

About returnTrue the returnFalse the the defdownload_image (URL): + PrintU'is downloading', the URL - Try: theResponse =requests.get (URL)Bayi ifResponse.status_code = = 200: the save_image (response.content) the returnNone - exceptrequestexception: - PrintU'Request picture failed', the URL the returnNone the the defsave_image (content): theFile_path ='{0}/{1}. {2}'. Format (OS.GETCWD (), MD5 (content). Hexdigest (),'jpg') - if noto

ImportRequestsImportRe#Embarrassing encyclopedia ReptileclassQSBK:#Initialize method, define some variables def __init__(self): Self.headers={ "user-agent":"mozilla/5.0 (Windows NT 10.0; WOW64) applewebkit/537.36 (khtml, like Gecko) chrome/61.0.3163.79 safari/537.36" } #The variable that holds the satin, each element is a piece of each pageself.stories=[] #variables to keep the program runningSelf.enable =FalsedefGetPage (self,page):Try: URL='http://www.qiushib

/mobilev/2011/9/8/V/S7CTIQ98V.mp4'can be obtained through regular R, and the FindAll method in the regular module re: Mp4list=re.findall (re_mp4,html)FindAll Returns the list, the element in the table is the address of the video, such as the following is a video address: Http://mov.bn.netease.com/mobilev/2011/9/8/V/S7CTIQ98V.mp4 after capturing the video address, use the Urlretrieve () method in the module urllib to download the video through the video address: Urllib.urlretrieve (mp4url),Mp4url

: Print("INFO--Current URL: "%response.url) Json_data= Response.json (). Get ("Data") #Start parsing Data ifJson_data: forIteminchjson_data: _title= Item.get ("title") _imgdict= Item.get ("image_list") #fix the URL, the default image address is a small image, we want a large HD image_imglist = [Str ("http:"+ _.get ("URL"). Replace ("List","Large") for_inch_imgdict]#Create a storage directory_downloaddir =Os.path.join (Self.downl

) Sigquit 4) Sigill5) SIGTRAP 6) SIGABRT 7) Sigbus 8) SIGFPE9) SIGKILL) SIGUSR1 SIGSEGV) SIGUSR2sigpipe) sigalrm SIGTERM) SIGCHLDsigcont) SIGSTOP sigtstp) SigttinSigttou) Sigurg sigxcpu) Sigxfsz() sigvtalrm) sigprof sigwinch) SIGIOSIGPWR) Sigsys sigrtmin) sigrtmin+1sigrtmin+2) sigrtmin+3 (sigrtmin+4) sigrtmin+5sigrtmin+6) sigrtmin+7 sigrtmin+8) sigrtmin+9(sigrtmin+10) sigrtmin+11 () sigrtmin+12) sigrtmin+13sigrtmin+14) sigrtmin+15 SIGRTMAX-14) SIGRTMAX-13SIGRTMAX-12) SIGRTMAX-11 SIGRTMAX-10) SIG

Before doing the project is in each page to deal with the different exception information, a page count down, a lot of try{}catch{} statement block, the entire code structure is not beautiful.See a post today about using the global application class to help get exception information, using the server. Transfer ("") specifies the page to accept the error, plus the use of server in the Accept error page. GetLastError () Gets the previous exception source.The Application_Error function in Global.as

Way One 1.1 Creating a global Exception class This class implements the Handlerexceptionresolver interface in detail as follows: Package com.rbc.hbms.util; Import Java.util.HashMap; Import Java.util.Map; Import Javax.servlet.http.HttpServletRequest; Import Javax.servlet.http.HttpServletResponse; Import Org.springframework.web.servlet.HandlerExceptionResolver; Import Org.springframework.web.servlet.ModelAndView; /** * Captures global exceptions

STM32 TIM input captures bilateral edge detection Tim_icpolarity_bothedge Come directly, first on the code: Initialize TIM1 input capture parameter Tim1_icinitstructure.tim_channel = tim_channel_1;//cc1s=01 Select input IC1 map to TI1 tim1_ icinitstructure.tim_icpolarity = Tim_icpolarity_bothedge; Tim1_icinitstructure.tim_icselection = Tim_icselection_directti; Map to TI1 on tim1_icinitstructure.tim_icprescaler = TIM_ICPSC_DIV1; Configuration

/19.0.1084.54safari/536.5 ' cookies_enabled=true# configuration uses the data pipeline Item_ pipelines=[' Douban.pipeliNes. Doubanpipeline ']mongodb_server= ' localhost ' mongodb_port=27017mongodb_db= ' douban ' mongodb_collection= ' DoubanGroup ' #crawlresponsiblybyidentifyingyourself (andyourwebsite) ontheuser-agent#user_agent= ' douban (+http://www.yourdomain.com) 'OK, a toy crawler is simply done.Start the Start commandNohup scrapy Crawl Group--logfile=test.log This article is from "someone

' = Data.split ("") [0]Elif Self.isexcerpt:self.data[' desc '] = dataSelf.isexcerpt = Falsedef getresult (self):Return Self.resultif __name__ = = "__main__":Con = Pymongo. Connection (' localhost ', 27017)db = Con.blogFetchblog = Db.fetch_blogurl = "http://blog.jobbole.com/all-posts/page/%d"Count = 1Flag = Falseheaders={' User-agent ': ' mozilla/5.0 (Windows; U; Windows NT 6.1; en-us; rv:1.9.1.6) gecko/20091201 firefox/3.5.6 '}While flag = = False:Tryreq = Urllib2. Request (Url%count,headers=he

1. class library to be referenced Copy codeThe Code is as follows: using System. Net; Using System. IO; Using System. Text; Using System. Text. RegularExpressions; 2. Obtain the key code of the webpage content of other websitesCopy codeThe Code is

Catch error, cannot use try{...} The way of catch () {}, PHP inside try{...} Catch is an exception that needs to be thrown by itself to catch and distinguish it from other languages. Second, you can achieve the same effect using the following

1, when crawling data, sometimes encountered by the site, such as IP, response status code of 403, then we hope to be able to throw The Closespider exception. 2, but as Scrapy official website mentions, scrapy default setting is to filter out the

So to see this problem. First clear the bounds of the thread code. In fact, the boundaries defined by the Run method of the Runnable interface can be considered as the boundaries of the thread code. The Run method prototype in the Runnable interface

This is a small example that introduces basic exception handling, including throwing, capturing, asserting, and logging.Java exception handling is managed through 5 keyword try, catch, throw, throws, finally. The basic procedure is to wrap the

Problem An HTTPS problem was encountered while studying the hacker News API. Because all the hacker News APIs are accessed through the encrypted HTTPS protocol, unlike the normal HTTP protocol, when using PHP functions file_get_contents() to get

Small demo, with JS capture keyboard disk Press the key, and then show the corresponding code value Press the key on the keyboard, The text box displays the corresponding code The above mentioned is the entire content of this

Keycode 8 = BackSpaceKeycode 9 = TabKeycode 12 = ClearKeycode 13 = EnterKeycode 16 = Shift_LKeycode 17 = Control_LKeycode 18 = Alt_LKeycode 19 = PauseKeycode 20 = Caps_LockKeycode 27 = EscapeKeycode 32 = spaceKeycode 33 = PriorKeycode 34 =

Function getYahooQuote ($ stockSymbol = "CCR "){If (! $ TargetURL) $ targetURL = "http://finance.yahoo.com/q? S = $ stockSymbol & d = t "; // set the URL target to be crawled$ Fd = fopen ("$ targetURL", "r ");$ StopExtract = 0;$ StartExtract =