py-pandas and lxml run dep?

[Mikolaj Kucharski]

Hi,

I did some quick testing of some random code from GitHub, which uses
pandas Python module and it failed with:

    holders = _pd.read_html(url)
  File "/usr/local/lib/python3.7/site-packages/pandas/io/html.py", line 1100, 
in read_html
    displayed_only=displayed_only,
  File "/usr/local/lib/python3.7/site-packages/pandas/io/html.py", line 891, in 
_parse
    parser = _parser_dispatch(flav)
  File "/usr/local/lib/python3.7/site-packages/pandas/io/html.py", line 848, in 
_parser_dispatch
    raise ImportError("lxml not found, please install it")
ImportError: lxml not found, please install it

Above `_pd` is pandas. After adding py3-lxml package problems goes
away. I can provide a patch and add a run dep. Does it make sense?

-- 
Regards,
 Mikolaj