title: I typed `scrapy version` but it trigger or load other spiders in the folder
body: <p>I'm relatively new to Scrapy, I just type <code>scrapy version</code> like below;
  But it did trigger spiders in the folder.</p>
  
  <p>Obviously, I have some spiders in development, for example one spider opens a Chrome web driver in the init method, just typing Scrapy version opens the Chrome browser. Why Scrapy is loading all the spiders in the folder? How to avoid this?</p>
  
  <pre><code>(django_corp_data):~/sherlockit$ scrapy version
  ['version']
  corp_data.spiders.quote
  version
  Scrapy 1.8.0
  </code></pre>