Of course you can but you will not input HTML code with your bot. If you look at the source code for the page you will see:
<form method="post" action="index.cgi">
<fieldset style="display:none">
<input type="hidden" name="m" value="convert" />
</fieldset>
...
It does say that the form uses the method post to this uri: http://toolserver.org/~diberri/cgi-bin/html2wiki/index.cgi
So now you can look at urllib2, urllib2 which is the python lib for http requests. And create your post request with the parameter you want.
E.g:
params = {
'dialect' : googlecode,
'uri' : myuri
}
You will need a header, telling the server who is doing the request:
E.g:
headers = {"Content-type": "application/x-www-form-urlencoded", "Accept": "text/plain"}
Something like this:
u = urllib2.urlopen(' http://toolserver.org/~diberri/cgi-bin/html2wiki/index.cgi', params)
h.request('POST', ' http://toolserver.org/~diberri/cgi-bin/html2wiki/index.cgi', params, headers)