title: Error using read_html() in pandas
body: <p>This piece of code is giving me an error:</p>
  
  <p><strong>Code :</strong></p>
  
  <pre><code>import pandas as pd
  
  fiddy_states = pd.read_html("https://simple.wikipedia.org/wiki/List_of_U.S._states")
  </code></pre>
  
  <p><strong>Error:</strong> </p>
  
  <pre><code>&gt; ---------------------------------------------------------------------------
  ImportError                               Traceback (most recent call last)
  &lt;ipython-input-9-87a39d7446f6&gt; in &lt;module&gt;()
        1 import pandas as pd
  ----&gt; 2 df_states = pd.read_html('http://www.50states.com/abbreviations.htm#.Vmz0ZkorLIU')
  
  C:\Anaconda3\lib\site-packages\pandas\io\html.py in read_html(io, match, flavor, header, index_col, skiprows, attrs, parse_dates, tupleize_cols, thousands, encoding)
      864     _validate_header_arg(header)
      865     return _parse(flavor, io, match, header, index_col, skiprows,
  --&gt; 866                   parse_dates, tupleize_cols, thousands, attrs, encoding)
  
  C:\Anaconda3\lib\site-packages\pandas\io\html.py in _parse(flavor, io, match, header, index_col, skiprows, parse_dates, tupleize_cols, thousands, attrs, encoding)
      716     retained = None
      717     for flav in flavor:
  --&gt; 718         parser = _parser_dispatch(flav)
      719         p = parser(io, compiled_match, attrs, encoding)
      720 
  
  C:\Anaconda3\lib\site-packages\pandas\io\html.py in _parser_dispatch(flavor)
      661     if flavor in ('bs4', 'html5lib'):
      662         if not _HAS_HTML5LIB:
  --&gt; 663             raise ImportError("html5lib not found, please install it")
      664         if not _HAS_BS4:
      665             raise ImportError("BeautifulSoup4 (bs4) not found, please install it")
  
  ImportError: html5lib not found, please install it
  </code></pre>
  
  <p>Although <strong>I have html5lib, lxml and BeatifulSoup4  library installed</strong> and updated. </p>