Iteration returns the same result while crawling - scrapy

Question

I'm new to Scrapy and i'm browsing through the manual book. I'm doing some exercises and stuck with these issue. While iterating through the list of books, the results always return the same ''key: value" pairs after iteration, despite tha fact, that there is 20 different elements in the page.
This is my code:
import scrapy
class MyBooks(scrapy.Spider):
name = 'bookstore'
allowed_domains = ['books.toscrape.com']
start_urls = ['http://books.toscrape.com']
def parse(self, response):
for book in response.xpath('//article[#class="product_pod"]'):
yield {
'title': book.xpath('//h3/a/text()').get(),
'price': book.xpath('//p[#class="price_color"]/text()').get(),
}
And this is my result:
2020-02-07 12:03:00 [scrapy.core.scraper] DEBUG: Scraped from <200 http://books.toscrape.com>
{'title': 'A Light in the ...', 'price': '£51.77'}
2020-02-07 12:03:00 [scrapy.core.scraper] DEBUG: Scraped from <200 http://books.toscrape.com>
{'title': 'A Light in the ...', 'price': '£51.77'}
2020-02-07 12:03:00 [scrapy.core.scraper] DEBUG: Scraped from <200 http://books.toscrape.com>
{'title': 'A Light in the ...', 'price': '£51.77'}
2020-02-07 12:03:00 [scrapy.core.scraper] DEBUG: Scraped from <200 http://books.toscrape.com>
{'title': 'A Light in the ...', 'price': '£51.77'}
2020-02-07 12:03:00 [scrapy.core.scraper] DEBUG: Scraped from <200 http://books.toscrape.com>
{'title': 'A Light in the ...', 'price': '£51.77'}
2020-02-07 12:03:00 [scrapy.core.scraper] DEBUG: Scraped from <200 http://books.toscrape.com>
{'title': 'A Light in the ...', 'price': '£51.77'}
2020-02-07 12:03:00 [scrapy.core.scraper] DEBUG: Scraped from <200 http://books.toscrape.com>
Why is that? Where i'm wrong?

Answer 1

I am not really familiar with xpath selectors, but for some reason it looks like book.xpath('//h3/a/text()') and book.xpath('//p[#class="price_color"]/text()') return a list of selectors with every book's data in them. To confirm this, you can call .getall() instead of .get() on these selectors, you will see that it returns a list of every book's result. I got it working with CSS selectors though:
def parse(self, response):
for book in response.xpath('//article[#class="product_pod"]'):
yield {
'title': book.css('h3').css('a::text').get(),
'price': book.css('.price_color::text').get()
}
You can read more about selectors here.