what's the use of feed(input()) in Python?

from HTMLParser import HTMLParserclass MyHTMLParser(HTMLParser):    def handle_starttag(self, tag, attrs):        print ('Start :', tag)        for ele in attrs:            print ('->', ele[0], '>', ele[1])    def handle_endtag(self, tag):        print ('End   :', tag)    def handle_startendtag(self, tag, attrs):        print ('Empty :', tag)        for ele in attrs:            print ('->', ele[0], '>', ele[1])parser = MyHTMLParser()for _ in range(int(input())):    parser.feed(input())

What's the use of the last line "parser.feed(input())"? what are the other ways that it can be used

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