[英]How can I get the first 3 results of a 'for' loop?
這是工作代碼:
import scrapy
class imdb_project(scrapy.Spider):
name = 'imdb'
start_urls = ['https://www.imdb.com/chart/top']
def parse(self, response):
for i in response.css('.titleColumn a'):
movie_name = i.css('::text').get()
movie_url = i.css('::attr(href)').get()
dict = {'movie': movie_name}
yield response.follow(movie_url, callback=self.parse_info, meta=dict)
def parse_info(self, response):
movie_name2 = response.meta['movie']
duration = response.css('ul.dxizHm li:nth-child(3)::text').get()
genre = ', '.join(response.css('a.ipc-chip--on-baseAlt *::text').getall())
print('\n')
yield {
'Movie Name': movie_name2,
'Duration': duration,
'Genre': genre,
}
print('\n')
這向我顯示了所有 250 個結果,但如果我只想查看前 3 個結果怎么辦?
更改列表迭代
for i in response.css('.titleColumn a'):
到:
for i in response.css('.titleColumn a')[:3]:
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