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2021 June 09

Baber Ibrar in Scrapy

When we select only //h2[@class="jsx-795760527"] then show 2 xpath, but i want only first one

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00:23пожаловаться #1

i in Scrapy

Ehm, do you have 2 classes with same name in html? You can get first one with get(), instead of getall(). Something like response.css('h2.jsx-795760527::text').get()
For xpath it would be the same

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00:31пожаловаться #2

i in Scrapy

Or I did not get you question

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00:31пожаловаться #3

Baber Ibrar in Scrapy

Thanks, its working

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00:35пожаловаться #4

Baber Ibrar in Scrapy

Please guide which better between XPath and CSS selector? I'm a newbie in scraping

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00:37пожаловаться #5

i in Scrapy

I recommend to use CSS-selector in most cases, it easier, also less code to write (for example, I don't have to write @class name - just dot). And use XPath only for more complicated cases, when you can't get element with CSS. It kinda rare. Maybe on every 5-10nth parser I had to use XPath once.

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00:41пожаловаться #6

i in Scrapy

btw, about your previous question - it's also N'th child selection for both, but anyway, getall() will get you list from one element, so not important in this case.

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00:42пожаловаться #7

i in Scrapy

https://www.w3schools.com/cssref/css_selectors.asp

W3Schools

CSS Selectors Reference

Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.

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00:42пожаловаться #8

i in Scrapy

For novice it's also significant to understand difference between space and > in CSS selectors, most errors coming when you trying to get in fact all descendants with space separator, but getting only direct childs of first level:

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00:46пожаловаться #9

i in Scrapy

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00:46пожаловаться #10

i in Scrapy

also, see browser extension SelectorGadget, it generates XPath or CSS in mostly "human" way, will help on start, but try don't use it all time, cause it will down your learning curve

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00:48пожаловаться #11

Baber Ibrar in Scrapy

I am very grateful to you for understanding me so well👍🏻

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00:49пожаловаться #12

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Айдер Гемеджи... in Scrapy

ребят можете подсказать пожалуйста только учусь

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02:05пожаловаться #13

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