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Excelize is a Microsoft-based Office OpenXML standard that is written by Golang to manipulate office Excel document class libraries. You can use it to read, write to XLSX files. Compared to other open source class libraries, Excelize supports writing documents with pictures (tables), supports inserting pictures into Excel, and does not lose the chart style after saving.
Transferred from: HTTP://WWW.GOCALF.COM/BLOG/PYTHON-READ-WRITE-EXCEL.HTML#XLRD-XLWTAlthough working with data every day, and frequently using Excel to do some simple data processing and display, but has long been careful to avoid using Python directly read and write Excel files. I usually save the data as a tab-separated text file (TSV), import it in Excel, or copy and paste it directly.The previous time to do a project, but have to use Python directly generated Excel files, and then as the requ
This is a creation in
Article, where the information may have evolved or changed.
Previously written in an export CVS format, if only simple export can fully meet the needs. On time if you want to have complex needs, such as style customization, multiple sheet and so on, it will not be completed. Later found someone has implemented Golang direct Excel to Excel operations, here to share a bit.Address: https://github.com/tealeg/xlsxSpecific types of operations can be seen directly inside the sampl
In this section, let's take a look at the use of cookies.Why use cookies?Cookies, which are data stored on the user's local terminal (usually encrypted) by certain websites in order to identify users and perform session tracking.For example, some sites need to log in to access a page, before you log in, you want to crawl a page content is not allowed. Then we can use the URLLIB2 library to save our registered cookies, and then crawl the other pages to achieve the goal.Before we do, we must first
HtmlparserImport UrllibUrltext = []#定义HTML解析器Class ParseText (Htmlparser.htmlparser):def handle_data (self, data):if data! = '/n ':Urltext.append (data)#创建HTML解析器的实例Lparser = ParseText ()#把HTML文件传给解析器Lparser.feed (Urllib.urlopen (/"Http://docs.python.org/lib/module-HTMLParser.html"/). Read ())Lparser.close ()For item in Urltext:Print ItemThe above code runs out too long, skippingIv. extracting cookies from HTML documentsVery often, we all need to deal with cookies, and fortunately the Cookielib
Hello, everybody. In the last section we studied the problem of the abnormal handling of reptiles, so let's take a look at the use of cookies.Why use cookies?Cookies, which are data stored on the user's local terminal (usually encrypted) by certain websites in order to identify users and perform session tracking.For example, some sites need to log in to access a page, before you log in, you want to crawl a page content is not allowed. Then we can use the URLLIB2 library to save our registered co
pass parameters.Example:Import urllib2urllib2.urlopen (' http://www.baidu.com ', data,10) urllib2.urlopen (' http://www.baidu.com ', timeout=10)Second, opener (Openerdirector)The Openerdirector manages a collection of Handler objects that doesAll the actual work. Each Handler implements a particular protocol orOption. The Openerdirector is a composite object that invokes theHandlers needed to open the requested URL. For example, theHttpHandler perfor
open (file, mode= ' R ', Buffering=-1, Encoding=none, Errors=none, Newline=none, Closefd=true, Opener=none)Open file and return a stream. Raise IOError upon failure.#打开文件并返回一个流? Failure throws IOError exceptionMode========= ===============================================================Character meaning--------- ---------------------------------------------------------------' R ' Open for reading (default)' W ' open for writing, truncating the file fi
functionality that your users need, instead of doing a bunch of useless things to users, identify and optimize usability issues as early as possible before product development, such as the prototype design phase, and reduce the risk of failure due to not understanding the requirements properly; Minimizing or eliminating documents can also reduce expenses.
Ii. 4 Dimensions of usability assessment
Functional functionality: Whether the product is useful. For example, bottle
hasattr (E, ' Code '):
print ' The server couldn\ ' t fulfill the request. '
print ' Error code: ', E.code
Else
# everything is fine
Info and GeturlUrlopen returns an Answer object response (or Httperror instance) has two very useful methods info () and Geturl ()Geturl-This is useful as a real URL to get back, because Urlopen (or opener object) mayThere will be redirects. The URL you get may be different from the request URL.Info-Thi
Cookies, which are data stored on the user's local terminal (usually encrypted) by certain websites in order to identify users and perform session tracking.For example, some sites need to log in to access a page, before you log in, you want to crawl a page content is not allowed. Then we can use the URLLIB2 library to save our registered cookies, and then crawl the other pages to achieve the goal.Before we do, we must first introduce the concept of a opener
Use of cookiesUse Python to log in to the website, use cookies to record login information, and then capture the information that you can see after you log in.What is a cookie?Cookies are data (usually encrypted) stored on the user's local terminal by certain websites in order to identify the user and track the session.For example, some sites need to log in to access a page, before you log in, you want to crawl a page content is not allowed. Then we can use the Urllib library to save our registe
is a list that shows all the merged cells. For example: [(0, 1, 0, 3), (1, 2, 0, 3)]What's weird here is that the numbers in the 0,0 are the values in the coordinates of the upper-left corner of the file. Use need attention.Finally: XLRD is older, it is only supported in the XLS format of Excel files, can now read the xlsx file data, but can not use the Formatting_info function.Write module: XLWT Quick StartImport XLWTWB=XLWT. Workbook () WS= Wb.add_
})Else:Proxy_handler = urllib2.proxyhandler (google_proxy)Opener = urllib2.build _ opener (proxy_handler)# Set the opener as the default OpenerUrllib2.install _ opener (opener)
In addition, "resp = urllib2.urlopen (request, Params)" is used to open the connection. In this
Python imitates the POST method to submit HTTP data and use the Cookie value.
This article describes how to simulate post http data and submit data with cookies in Python. The specific implementation method is as follows:
Method 1
If you do not use cookies, it is very easy to send http post:Copy codeThe Code is as follows: import urllib2, urllibData = {'name': 'www ', 'Password': '000000 '}F = urllib2.urlopen (Url = 'HTTP: // www.bkjia.com /',Data = urllib. urlencode (data))Print f. read ()When
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