What's the best way to go about validating that a document follows some version of HTML (prefereably that I can specify)? I'd like to be able to know where the failures occur, as in a web-based validator, except in a native Python app.
A:
XHTML is easy, use lxml.
HTML is harder, since there's traditionally not been as much interest in validation among the HTML crowd (run StackOverflow itself through a validator, yikes). The easiest solution would be to execute external applications such as nsgmls or OpenJade, and then parse their output.
John Millikin
2008-08-30 01:20:52
+1
A:
Try tidylib. You can get some really basic bindings as part of the elementtidy module (builds elementtrees from HTML documents). http://effbot.org/downloads/#elementtidy
>>> import _elementtidy
>>> xhtml, log = _elementtidy.fixup("<html></html>")
>>> print log
line 1 column 1 - Warning: missing <!DOCTYPE> declaration
line 1 column 7 - Warning: discarding unexpected </html>
line 1 column 14 - Warning: inserting missing 'title' element
Parsing the log should give you pretty much everything you need.
Aaron Maenpaa
2008-08-30 01:55:50
+3
A:
Starting with html5, you can try to use html5lib.
You can also decide to install the HTML validator locally and create a client to request the validation.
Here I had made a program to validate a list of urls in a txt file. I was just checking the HEAD to get the validation status, but if you do a GET you would get the full results. Look at the API of the validator, there are plenty of options for it.
import httplib2
import time
h = httplib2.Http(".cache")
f = open("urllistfile.txt", "r")
urllist = f.readlines()
f.close()
for url in urllist:
# wait 10 seconds before the next request - be nice with the validator
time.sleep(10)
resp= {}
url = url.strip()
urlrequest = "http://qa-dev.w3.org/wmvs/HEAD/check?doctype=HTML5&uri="+url
try:
resp, content = h.request(urlrequest, "HEAD")
if resp['x-w3c-validator-status'] == "Abort":
print url, "FAIL"
else:
print url, resp['x-w3c-validator-status'], resp['x-w3c-validator-errors'], resp['x-w3c-validator-warnings']
except:
pass
karlcow
2009-03-14 22:42:12
+1
A:
http://countergram.com/software/pytidylib is a nice python binding for HTML Tidy. Their example:
from tidylib import tidy_document
document, errors = tidy_document('''<p>fõo <img src="bar.jpg">''',
options={'numeric-entities':1})
print document
print errors
Dave Brondsema
2009-08-14 18:04:38