我希望得到与此命令行相同的结果: scrapy crawl linkedin_anonymous -a first=James -a last=Bond -o output.json
我的脚本如下:
import scrapy
from linkedin_anonymous_spider import LinkedInAnonymousSpider
from scrapy.crawler import CrawlerProcess
from scrapy.utils.project import get_project_settings
spider = LinkedInAnonymousSpider(None, "James", "Bond")
process = CrawlerProcess(get_project_settings())
process.crawl(spider) ## <-------------- (1)
process.start()
我发现 (1) 中的 process.crawl() 正在创建另一个 LinkedInAnonymousSpider,其中 first 和 last 都是 None (打印在 (2) 中),如果是这样,那么创建对象蜘蛛没有意义,以及如何是否可以先和最后将参数传递给 process.crawl()?
linkedin_anonymous:
from logging import INFO
import scrapy
class LinkedInAnonymousSpider(scrapy.Spider):
name = "linkedin_anonymous"
allowed_domains = ["linkedin.com"]
start_urls = []
base_url = "https://www.linkedin.com/pub/dir/?first=%s&last=%s&search=Search"
def __init__(self, input = None, first= None, last=None):
self.input = input # source file name
self.first = first
self.last = last
def start_requests(self):
print self.first ## <------------- (2)
if self.first and self.last: # taking input from command line parameters
url = self.base_url % (self.first, self.last)
yield self.make_requests_from_url(url)
def parse(self, response): . . .
最佳答案
在 process.crawl
方法中传递蜘蛛参数:
process.crawl(spider, input='inputargument', first='James', last='Bond')
关于python - 在 Scrapy python 中将参数传递给 process.crawl,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/34382356/