python xpath example

attributeXPath = "//a[@id = ' start_handle ']"A indicates that all a elements are selected, plus [@id = ' start_handle '] to select the A element with the id attribute ' Start_handle '(2) Locating by Name propertyXPath = "//input[@name = ' CustName ']"Summarize : XPath = "//tag name [@ attribute =' property value ']"Attribute criteria: Most commonly id,name,class, and so on, the category of attributes has no special restrictions, as long as one eleme

The method previously written about the relative parent element and the next sibling element.This time, add all the methods for finding elements in the XPath relative node location. Example will not give up, you can go to practice.XPath relative node Lookup method:1. XPath ('./ancestor::* ')Finds all ancestors of the current node, that is, parent node or grandpar

1, coverage package implementation code Coverage (1) pip install coverage (2) Coverage run xx.py (test script file) (3) Coverage report-m print out Coverage Information Report (4) coverage in the console HTML generates a Htmlcov file in the same directoryfolder, open index.html in folders to view code coverage in a graphical interface2, Xpath Understanding(1) XPath is a language that looks for information i

[ Ends-with (@class, "-special")]3.4 Using logical operators--and, or, for example://input[@name = "Phone" and @datatype = "M"]Four, XPath axis positioning　4.1-axis operation　Ancestor: Ancestor nodes include parentParent: Father NodePrceding-sibling: All sibling nodes before the current element node labelPrceding: All nodes before the current element node label following-sibling: All sibling nodes after the

The original title: "Python web crawler-scrapy of the selector XPath" to the original text has been modified and interpreted AdvantageXPath is more convenient to choose than CSS selectors. No label for ID class Name property Labels with no significant attributes or text characteristics Tags with extremely complex nesting levels XPath pa

This is a case of using XPath, for more information, see: Python Learning Guide Case: Crawler using XPathNow we use XPath to make a simple crawler, we try to crawl all the posts in a bar and download the images from each floor of the post to local.#-*-coding:utf-8-*-#tieba_xpath. PY"""role: This case uses XPath to

that selects Bookstore, and the selected book element must have the price child element. #/bookstore/book[price>35.00]: Represents the book child element that selects Bookstore, and the price child element value of the selected book element must be greater than 35. #/bookstore/book[price>35.00]/title: Indicates in example 14 result set, select Title Child element. #/bookstore/book/price[.>35.00]: Represents the price child element that selects "/book

'--------------------------------------------' print ' # attrib and text ' Print ‘--------------------------------------------' for element in Tree.xpath (U "//strong[contains (@class, ' j-p-2131674 ')"): Print element.text print Element.att Ribprint ' print '--------------------------------------------' print ' ########## use BeautifulSoup ############## ' print '--------------------------------------------' print ' # loading content to BeautifulSoup ' soup = beautifulsoup ( Content, ' Html.pa

def loadPage (self, url): req = urllib.request.Request (URL, Headers=self.ua_header) HTML = Urllib.request.urlopen (req). Read () #解析html为html文档 Selecto R = etree. HTML (HTML) #抓取当前页面的所有帖子的url的后部分, that is, the number of the post # http://tieba.baidu.com/p/4884069807 "p/4884069807" Links = Selector.xpath ('//div[@class = "Threadlist_lz clearfix"]/div/a/@href ') #links类型为etreeElementSt Ring list #遍历列表, and merged into a post address, call picture processing function LoadImage for link in

Driver.find_element_by_xpath (input[@id = "kw"])The above code, I believe a lot of learning Selenium + python friends are very familiar with, is to locate Baidu home search box code, if we want to "kw", with a variable to indicate how to operate it?At present, I know there are two ways, such as the next, is to locate the Baidu search box, click the Search code, in the process of XPath positioning, using the

Use Python+xpath to get the download link for https://pypi.python.org/pypi/lxml/2.3/:After using requests to get the HTML, analyze the tags found in HTML to find the link in They were then givenclass="Odd"> and class=" even"> content, which can be written as XPath when using XPath ('//table[@class = ' list ']/ tr[@cla

1. After the XPath () double quotation mark ("") inside cannot apply the double quotation mark (""), the inside double quotation mark ("") to the single quotation mark ("") the error is gone. 2. How can I find the positioning point exactly when locating the element?To skillfully apply F12, determine the page element to be positioned, and see if the element-related attribute value is unique in the code in the page (if there is an ID value that can be u

This article introduces you to the Python crawler Lxml-etree and XPath use (attached case), the content is very detailed, I hope to help everyone. Lxml:python's Html/xml Parser Official documents: https://lxml.de/ Before use, need to install an lxml bag Function: 1. Parsing HTML: Using Etree. HTML (text) parses HTML fragments of string format into HTML documents 2. Read the XML file 3.etree and

This article explains how to use XPath in scrapy to get the various values you wantUsing watercress as an exampleHttps://book.douban.com/tag/%E6%BC%AB%E7%94%BB?start=20type=TYou can verify that your XPath is correct in conjunction with the Plugin XPath helper in Chrome.Here I want to get the title in the href and a tag under the a tag, use the Extract_first () in

A joke about crawling the embarrassing encyclopedia:1. Use XPath to analyze the expression of the first crawl content;2. Obtain the original code by initiating the request;3. Use XPath to analyze source code and extract useful information;4. Convert from Python format to JSON format and write to file#_ *_ coding:utf-8 _*_ "Created on July 17, 2018 @author:sssfunc

First, IntroductionXPath is a language that looks for information in an XML document. XPath can be used to traverse elements and attributes in an XML document. XPath is the main element of the XSLT standard, and both XQuery and XPointer are built on top of the XPath expression.ReferenceSecond, installationPIP3 Install lxml　Third, the use　　1. ImportFrom lxml impor

: \ n', Driver.current_url time.sleep (1) PrintI'\ n' ifLen (HEADX)!=1: Driver.switch_to_window (headx[1]) Durl=Driver.current_urlPrint 'current page address: \ n', Durl,'\ n' if 'Woyihome' inchdurl:driver.close () Driver.switch_to_window (headx[0]) Else: K=1 Break elif 'localhost' inchDriver.current_url:Printaexcept : Pass #Print B Printa#driver.quit ()

Python static Web Crawler xpath (simple blog update reminder function), pythonxpath Directly run the Code: #! /Usr/bin/env python3 # antuor: Alan #-*-coding: UTF-8-*-import requestsfrom lxml import etreeimport datetime, timeimport osclass xxoohelper (object ): # Easy read def _ init _ (self): self. url = 'HTTP: // www.cnblogs.com/alan-babyblog/' # initialize def getSource (self): html = requests. get (self.

# with contains, look for the page where the Style property value contains all the DIV elements with the keyword sp.gif, where the @ can be followed by any property name of the element.Self.driver.find_element_by_xpath ('//div[contains (@style, "Sp.gif")] '). Click ()# with Start-with, look for a DIV element with the style attribute starting with position, where the @ can be followed by any property name of the element.Self.driver.find_element_by_xpath ('//div[start-with (@style, "position")] ')

Use python + xpath to get the download linkUse python + xpath to obtain external