使用Scrapy清空结果文件

刚开始学习Python，如果这是个愚蠢的问题，那么很抱歉！
我想从这个网站上搜集真实的地产数据：https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?pn=2&r=10使用的是scrappy。
理想情况下，最后我会得到一个文件，其中包含所有可用的真实的地产报价及其各自的地址，价格，面积平方米，和其他细节（例如，连接到公共交通）。
我用Scrapy构建了一个测试spider，但它总是返回一个空文件。我尝试了一大堆不同的xpath，但都不能让它工作。有人能帮忙吗？下面是我的代码：

import scrapy

class GetdataSpider(scrapy.Spider):
  name = 'getdata' 
  allowed_domains = ['immoscout24.ch']
  start_urls = ['https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?r=10',
  'https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?pn=2&r=10',
  'https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?pn=3&r=10',
  'https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?pn=4&r=10',
  'https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?pn=5&r=10']

  def parse(self, response):

    single_offer = response.xpath('//*[@class="Body-jQnOud bjiWLb"]')

    for offer in single_offer: 
        offer_price = offer.xpath('.//*[@class="Box-cYFBPY jPbvXR Heading-daBLVV dOtgYu xh-   highlight"]/text()').extract()
        offer_address = offer.xpath('.//*[@class="Address__AddressStyled-lnefMi fUIggX"]/text()').extract_first()

        yield {'Price': offer_price,
                'Address': offer_address}

First all of , You need to add your real user agent . I injected user-agent in settings.py file. I also have corrected the xpath selection and made pagination in start_urls which type of next page pagination is 2 time fister than other types.This is the woeking example.

import scrapy
class GetdataSpider(scrapy.Spider):
    name = 'getdata'
    allowed_domains = ['immoscout24.ch']
    start_urls = ['https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?pn='+ str(x)+'&r=10' for x in range(1,5)]

    def parse(self, response):

        single_offer = response.xpath('//*[@class="Content-kCEgNG degSLr"]')

        for offer in single_offer:
            name = offer.xpath('.//*[@class="Box-cYFBPY jPbvXR Heading-daBLVV dOtgYu"]/span/text()').extract_first()
            offer_address = offer.xpath('.//*[@class="AddressLine__TextStyled-eaUAMD iBNjyG"]/text()').extract_first()

            yield {'title': name,
                   'Address': offer_address}

中的每一个

- 输出： * *

{'title': 'CHF 950.—', 'Address': 'Friedackerstrasse 6, 8050 Zürich, ZH'}
2022-03-22 00:58:41 [scrapy.core.scraper] DEBUG: Scraped from <200 https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?r=10>
{'title': 'CHF 220.—', 'Address': 'Freilagerstrasse 40, 8047 Zürich, ZH'}
2022-03-22 00:58:41 [scrapy.core.scraper] DEBUG: Scraped from <200 https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?r=10>
{'title': 'CHF 220.—', 'Address': 'Freilagerstrasse 40, 8047 Zürich, ZH'}
2022-03-22 00:58:41 [scrapy.core.scraper] DEBUG: Scraped from <200 https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?r=10>
{'title': 'CHF 220.—', 'Address': 'Freilagerstrasse 40, 8047 Zürich, ZH'}
2022-03-22 00:58:41 [scrapy.core.scraper] DEBUG: Scraped from <200 https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?r=10>
{'title': 'CHF 4020.—', 'Address': 'Uitikonerstrasse 9, 8952 Schlieren, ZH'}
2022-03-22 00:58:41 [scrapy.core.scraper] DEBUG: Scraped from <200 https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?r=10>
{'title': 'CHF 260.—', 'Address': 'Buckhauserstrasse 45/49, 8048 Zürich, ZH'}
2022-03-22 00:58:41 [scrapy.core.scraper] DEBUG: Scraped from <200 https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?r=10>
{'title': 'CHF 260.—', 'Address': 'Letzigraben 75, 8003 Zürich, ZH'}
2022-03-22 00:58:41 [scrapy.core.scraper] DEBUG: Scraped from <200 https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?r=10>
{'title': 'CHF 2655.—', 'Address': 'Weiningerstr. 53, 8103 Unterengstringen, ZH'}
2022-03-22 00:58:41 [scrapy.core.scraper] DEBUG: Scraped from <200 https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?r=10>
{'title': 'CHF 320.—', 'Address': 'Baslerstrasse 60, 8048 Zürich, ZH'}
2022-03-22 00:58:41 [scrapy.core.scraper] DEBUG: Scraped from <200 https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?r=10>
{'title': 'CHF 190.—', 'Address': 'Neugutstrasse 66, 8600 Dübendorf, ZH'}
2022-03-22 00:58:41 [scrapy.core.scraper] DEBUG: Scraped from <200 https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?r=10>
{'title': 'CHF 180.—', 'Address': 'Herostrasse 9, 8048 Zürich, ZH'}
2022-03-22 00:58:41 [scrapy.core.scraper] DEBUG: Scraped from <200 https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?r=10>
{'title': 'CHF 180.—', 'Address': 'Herostrasse 9, 8048 Zürich, ZH'}
2022-03-22 00:58:41 [scrapy.core.scraper] DEBUG: Scraped from <200 https://www.immoscout24.ch/de/buero-gewerbe-industrie/mieten/ort-zuerich?r=10>

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使用Scrapy清空结果文件

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