<ruby id="bdb3f"></ruby>

    <p id="bdb3f"><cite id="bdb3f"></cite></p>

      <p id="bdb3f"><cite id="bdb3f"><th id="bdb3f"></th></cite></p><p id="bdb3f"></p>
        <p id="bdb3f"><cite id="bdb3f"></cite></p>

          <pre id="bdb3f"></pre>
          <pre id="bdb3f"><del id="bdb3f"><thead id="bdb3f"></thead></del></pre>

          <ruby id="bdb3f"><mark id="bdb3f"></mark></ruby><ruby id="bdb3f"></ruby>
          <pre id="bdb3f"><pre id="bdb3f"><mark id="bdb3f"></mark></pre></pre><output id="bdb3f"></output><p id="bdb3f"></p><p id="bdb3f"></p>

          <pre id="bdb3f"><del id="bdb3f"><progress id="bdb3f"></progress></del></pre>

                <ruby id="bdb3f"></ruby>

                ??一站式輕松地調用各大LLM模型接口,支持GPT4、智譜、豆包、星火、月之暗面及文生圖、文生視頻 廣告
                在scrapy中通過在`pipelines.py`中定義一個對數據操作的管道來保存數據。 <br/> **1. 在`pipelines.py`定義一個Pipeline管道** ```python class MyspiderPipeline: def process_item(self, item, spider): """ (1) process_item是固定方法名,不能更改 (2) 你可以在該方法中將數據保存 :param item: 當爬蟲books.py中 yield item 一次則process_item方法被調用一次 item參數名可以與 yield item 參數名不一樣 :param spider: :return: 返回item,將item提交給引擎 """ print(item) # {'url': 'https://book.jd.com/'} return item ``` <br/> **2. 在你的爬蟲產生數據的地方`yield item`** ```python #books.py import scrapy class BooksSpider(scrapy.Spider): name = 'books' allowed_domains = ['book.jd.com'] start_urls = ['http://book.jd.com/'] def parse(self, response): item = {} item['url'] = response.url # 在生成數據第地方 yield 數據,將數據發送到pipeline管道的process_item方法中 # 每做一次 yield item 就會調用一次 process_item 方法 yield item pass ``` <br/> **3. 在`settings.py`中啟用 MyspiderPipeline** ```python ITEM_PIPELINES = { # 300為權重,數字越小權重越大,越先被執行 'mySpider.pipelines.MyspiderPipeline': 300, } ```
                  <ruby id="bdb3f"></ruby>

                  <p id="bdb3f"><cite id="bdb3f"></cite></p>

                    <p id="bdb3f"><cite id="bdb3f"><th id="bdb3f"></th></cite></p><p id="bdb3f"></p>
                      <p id="bdb3f"><cite id="bdb3f"></cite></p>

                        <pre id="bdb3f"></pre>
                        <pre id="bdb3f"><del id="bdb3f"><thead id="bdb3f"></thead></del></pre>

                        <ruby id="bdb3f"><mark id="bdb3f"></mark></ruby><ruby id="bdb3f"></ruby>
                        <pre id="bdb3f"><pre id="bdb3f"><mark id="bdb3f"></mark></pre></pre><output id="bdb3f"></output><p id="bdb3f"></p><p id="bdb3f"></p>

                        <pre id="bdb3f"><del id="bdb3f"><progress id="bdb3f"></progress></del></pre>

                              <ruby id="bdb3f"></ruby>

                              哎呀哎呀视频在线观看