title: What is the difference beautifulsoup and bs4
body: <p>I'm new to python and I tried to parse some XML files in order to add some new tags and store that new XML file.</p>
  
  <p><code>python-beautifulsoup</code> seams to be the right package for that. Searching around the web for tutorials, how to add an new tag to XML parsed by BeautifulSoup, i found out, that the package <code>python-bs4</code> is used.</p>
  
  <p>Looking at the package description, both packages have the same title:</p>
  
  <pre><code>python-bs4 - error-tolerant HTML parser for Python
  python-beautifulsoup - error-tolerant HTML parser for Python
  </code></pre>
  
  <p>So my question: what is the difference?</p>