如何使用scrapy检查python中的for循环中是否存在密钥

Question

我试图查看商家名称是否与之前的商家名称匹配，是否确实打破了迭代，如果没有继续迭代。

问题

它忽略了休息，我仍然看到重复。

run.py

 def parse(self, response):
    for business in response.css('div.info'):
        business_names = business.css('span[itemprop="name"]::text').extract()
        business_name = business.css('span[itemprop="name"]::text').extract()

        if business_name in business_names:
            break
        else:
            website = business.css('div.links  a::attr(href)').extract_first()
            phone_number = business.css('div.phones.phone.primary::text').extract()
        yield {
            'Business Name': business_names,
            'Website': website,
            'Phone Number': phone_number,

        }

Answer 1

使用in运算符检查是否存在，并为项目设置一些值。现在，您的代码正在检查business_name的元素是否等于business_name

for item in business_name:
    if item == business_name:
        break

要：

if 'somevaluehere' in business_names:
    break