You can specify encodingwhen calling tostring():
>>> from lxml.html import fromstring, tostring
>>> s = 'Actress Adamari López And Amgen Launch Spanish-Language Chemotherapy: Myths Or Facts™ Website And Resources'
>>> div = fromstring(s)
>>> print tostring(div, encoding='unicode')
<p>Actress Adamari López And Amgen Launch Spanish-Language Chemotherapy: Myths Or Facts™ Website And Resources</p>
As a note, you should definitely uselxml.html.tostring() when working with data HTML:
, lxml.html.tostring, lxml.tostring. lxml.tostring(doc) XML- , HTML. , , <script src="..."></script>, <script src="..." />, .
: