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              如何自學Python爬蟲技術

              作為程序員或者軟件測試員們的一員,置信大家一定都聽說過python語言。

              Python語言這兩年是越來越火了,它漸漸崛起也是有緣由的。

              比如市場需求、入門簡單易學、支持多種語言……當然這些都是很官方的。

              說白了,就是

              寫個web服務,可以用python;

              寫個服務器腳本,可以用python;

              寫個桌面客戶端,可以用python;

              做機器學習數據挖掘,可以用python;

              寫測試工具自動化腳本依舊可以用python……

              Python語言是免費支持的!

              既然那么好,如何利用python進行有意義的行(zhuan)為(錢)呢?

              今天,小編和大家一起學習python爬蟲技術呢?

              一、老生常談-學習準備

              學會提前準備是一切好的開始,學習語言更是如此。興趣是最好的老師,學習爬蟲技術,可以給自己定個目標,比如為了妹紙,爬取時尚網站的數據信息,打包給那個她······

              基礎知識必須掌握

              什么是爬蟲?數據是從哪里來的?這些基礎到不行的知識點,請自行搜索!你還得掌握:

              ·HTML,了解網頁的結構,內容等,幫助后續的數據爬取。

              ·Python

              因為比較簡單,零基礎可以聽一些大牛的博客文章,或者聽別人是怎么說

              python玩轉自動化測試,這個點有基礎的同學,可以略過哈~

              ·TCP/IP協議,HTTP協議

              了解在網絡請求和網絡傳輸上的基本原理,幫助今后寫爬蟲的時候理解爬蟲的邏輯。

              二、爬取整個網站的構思

              當用戶在瀏覽網頁時,會看圖片。

              點擊網址看到的圖片,是用戶輸入網址-DNS服務器-服務器主機-服務器請求-服務器解析-發送瀏覽器HTML、JS、CSS-瀏覽器解析-解析圖片

              爬蟲需要爬取,有HTML代碼構成的網頁,然后獲取圖片和文字!

              三、環境配置

              環境配置總是最重要的一個環境,做過測試的都知道。python也一樣,需要掌握幾款好用的IDE,我們來看看常用的幾個:

              1、Notepad++,簡單,但是提示功能不強

              2、PyCharm,用于一般IDE具備的功能,比如,調試、語法高亮、代碼跳轉、等等,同時可用于Django開發,支持Google App Engine,更酷的是,PyCharm支持IronPython!

              好的開發工具是一切工作完成的前提。

              爬取這么多數據,賺錢豈不是分分鐘~技藝快學起來吧!

               

              馬哥學習交流群

              馬哥教育-Python開發-1群 335068227

              馬哥教育-Python開發-2群 608459685

               

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