Now, it is time for css selector using lxml.cssselect.
Straight to an example of using it:
from lxml.cssselect import CSSSelector
css_sel = CSSSelector('table.tableSchedule tr')
html_doc = lxml.html.fromstring(some_web_html_string)
row_els = css_sel(html_doc)
Sweet and simple.
I am still playing around with it and found that using direct descendant css code is not possible. Something like the following:
css_sel = CSSSelector('table.tableSchedule > tobdy > tr > td')
Please leave a comment if you are able to use ">" in the css code part.