from html.parser import HTMLParser

class MyHTMLParser(HTMLParser):

def __init__(self):
    HTMLParser.__init__(self)
    self.flag = False
    self.h3_flag = False

def _attrs(self, attrlist, attrname):
    for attr in attrlist:
        if attr[0] == attrname:
            return attr[1]
    return None

def handle_starttag(self, tag, attrs):
    #print(attrs)
    if tag == 'h3' and  self._attrs(attrs, 'class') =="event-title":
        self.h3_flag = True
    if tag == 'time':
        print("会议时间：")
        self.flag = True
    if tag == 'span' and self._attrs(attrs, 'class') == 'event-location':
        print("会议地点：")
        self.flag = True


def handle_endtag(self, tag):
    self.flag = False
    self.h3_flag = False
    #print('</%s>' % tag)
    pass

def handle_startendtag(self, tag, attrs):
    #print('<%s/>' % tag)
    pass

def handle_data(self, data):
    if self.h3_flag == True and self.lasttag == 'a':
        print('会议名称：', data)
    if self.flag == True:
        print(data)


def handle_comment(self, data):
    #print('<!--', data, '-->')
    pass

def handle_entityref(self, name):
    print('&%s:' % name)

def handle_charref(self, name):
    print('&#%s:' % name)

parser = MyHTMLParser() with open('html.txt', 'r', encoding='utf-8') as f: parser.feed(f.read())

光靠教程里的那些内容，做题实在是太难了……
o(╥﹏╥)o