Python HTMLParser

I'm parsing a html document using HTMLParser and I want to print the contents 开发者_运维技巧between the start and end of a p tag

See my code snippet

    def handle_starttag(self, tag, attrs):
        if tag == 'p':
            print "TODO: print the contents"

Based on what @tauran posted, you probably want to do something like this:

from HTMLParser import HTMLParser

class MyHTMLParser(HTMLParser):
    def print_p_contents(self, html):
        self.tag_stack = []
        self.feed(html)

    def handle_starttag(self, tag, attrs):
        self.tag_stack.append(tag.lower())

    def handle_endtag(self, tag):
        self.tag_stack.pop()

    def handle_data(self, data):
        if self.tag_stack[-1] == 'p':
            print data

p = MyHTMLParser()
p.print_p_contents('<p>test</p>')

Now, you might want to push all <p> contents into a list and return that as a result or something else like that.

TIL: when working with libraries like this, you need to think in stacks!

I extended the example from the docs:

from HTMLParser import HTMLParser

class MyHTMLParser(HTMLParser):

    def handle_starttag(self, tag, attrs):
        print "Encountered the beginning of a %s tag" % tag

    def handle_endtag(self, tag):
        print "Encountered the end of a %s tag" % tag

    def handle_data(self, data):
        print "Encountered data %s" % data

p = MyHTMLParser()
p.feed('<p>test</p>')

-

Encountered the beginning of a p tag
Encountered data test
Encountered the end of a p tag

It did not seem to work for my code so I defined tag_stack = [] outside like a sort of global variable.

from html.parser import HTMLParser
    tag_stack = []
    class MONanalyseur(HTMLParser):

    def handle_starttag(self, tag, attrs):
        tag_stack.append(tag.lower())
    def handle_endtag(self, tag):
        tag_stack.pop()
    def handle_data(self, data):
        if tag_stack[-1] == 'head':
            print(data)

parser=MONanalyseur()
parser.feed()