title: Scrapy error on Scraping
body: <p>Here is what I trying to do.  I want to scrape emails from a number of websites. I have a file using which I can input the scrapy all the list of url. This is how I tried to extract email:  </p>
  
  <pre><code>import scrapy
  import datetime
  import re
  from scrapy.spiders import CrawlSpider
  from techfinder.items import EmailItem
  from scrapy.selector import HtmlXPathSelector
  
  
  class DetectSpider(scrapy.Spider):
      name = "test"
  
      start_urls = ["http://example.com"]#[url.strip() for url in starturlfile.readlines()]
  
  
      def parse(self, response):
  
          DOWNLOADER_MIDDLEWARES = 
          {
              'scrapy_proxy_rotator.ProxyMiddleware': 1,
          }
  
          PROXY_ROTATOR = 
          {
              'username': 'user1',
              'password': 'pass1',
              'proxies_file': 'proxies.txt',
          }
          emails = re.findall(r'[\w\.-]+@[\w\.-]+', response.body)        
          emailitems = []
          for email in zip(emails):
              emailitem = EmailItem()
              emailitem["email"] = emails
              emailitem["source"] = response.url
  
          return emailitems
  </code></pre>
  
  <p>I ran the command as:  </p>
  
  <pre><code>scrapy runspider scrapyDemo.py -o t.json -t json
  </code></pre>
  
  <p>And got the error:  </p>
  
  <pre><code>2017-02-09 12:58:34 [scrapy.utils.log] INFO: Scrapy 1.3.0 started (bot: scrapybot)
  2017-02-09 12:58:34 [scrapy.utils.log] INFO: Overridden settings: {'FEED_FORMAT': 'json', 'FEED_URI': 't.json'}
  Usage
  =====
    scrapy runspider [options] &lt;spider_file&gt;
  
  runspider: error: Unable to load 'scrapyDemo.py': No module named techfinder.items
  </code></pre>
  
  <p>Why I am getting this error? Also how I can crawl the complete website and get the emails in an optimized way using my program? I am using proxy rota tor for multiple proxy support. If possible how I can add user-agent definition in my code?<br>
  Kindly help me with this problem.<br>
  Please let me tell you I am not scraping emails for spam. As I have many of the website I trying to acquire the emails from it.</p>