Revert "Revert "refactor: move xmodule folder to root""

xmodule/html_checker.py

@@ -0,0 +1,17 @@
+# lint-amnesty, pylint: disable=missing-module-docstring
+
+from lxml import etree
+
+
+def check_html(html):
+    '''
+    Check whether the passed in html string can be parsed by lxml.
+    Return bool success.
+    '''
+    parser = etree.HTMLParser()
+    try:
+        etree.fromstring(html, parser)
+        return True
+    except Exception:   # pylint: disable=broad-except
+        pass
+    return False