Question

In oython

3. HTML supports ordered and unordered lists. An ordered list is defined using element ol and each item of the list is defined using element li. An unordered list is defined using element ul and each item of the list is defined using element li as well. For example, the unordered list in file w3c html is described using HTML code ul> <li>Web for All</li> <li>Web on Everything</li> </ul- Develop class ListCollector as a subclass of HTML Parser that, when fed an HTML file, creates a Python list for every ordered or unordered list in the HTML document. Each item of a Python list should be the text data that appears in one item of the corresponding HTML list. You may assume that every item of every list in the HTML document contains only text data (i.e. no other HTML element). The class ListCollectot should support method arguments but returns a list containing all the created Python lists that takes no input >>> infile = open('lists. html') >>> content-infile read() >>> infile close() >>> myparser = ListCollector() >myparserfeed(content) >>>myparser.getists() ['An item', Another, 'And another one] File: w3c.html File: lists.html ['ltem one', 'Item two', 'ltem three', 'ltem four]]

Answer 1

Answer:

from html.parser import HTMLParser
class ListCollector(HTMLParser):
def __init__(self):
HTMLParser.__init__(self)
self.flag = 0
self.ol = 0
self.data = []
self.data1 = []

def handle_starttag(self, tag, attributes):
if tag == 'ol':
self.ol = 1
if tag == 'ul':
self.ol = 2
if tag != 'li':
return
if self.flag:
self.flag += 1
return
self.flag = 1

def handle_endtag(self, tag):
if tag == 'ol' or tag == 'ul':
self.ol = 0
if tag == 'li' and self.flag:
self.flag -= 1

def handle_data(self, data):
if self.flag:
if self.ol == 2:
self.data.append(data)
elif self.ol == 1:
self.data1.append(data)
def getLists(self):
print([self.data,self.data1])

infile = open('lists.html')
content = infile.read()
infile.close()
myparse = ListCollector()
myparse.feed(content)
myparse.getLists()

output:

File "main.py", line 1 rom html.parser import HTMLParser SyntaxError: invalid syntax Program finished with exit code 1 Press ENTER to exit console.0