无法导入scrapy

# 安装Scrapy
pip install scrapy

# 激活虚拟环境（以venv为例）
source venv/bin/activate  # Linux/MacOS
venv\Scripts\activate    # Windows

pip install -r requirements.txt  # 如果有requirements.txt文件

sudo pip install scrapy  # Linux/MacOS

# myspider.py
import scrapy

class MySpider(scrapy.Spider):
    name = "myspider"
    start_urls = ['http://example.com']

    def parse(self, response):
        self.log('Visited %s' % response.url)
        for quote in response.css('div.quote'):
            item = {
                'author_name': quote.css('span.text::text').extract_first(),
                'author_url': quote.xpath('span/small/a/@href').extract_first(),
            }
            yield item