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Editorial Team
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Asked: 2026-05-14T20:01:23+00:00

I’d like to generate completely random piece of html source, possibly from a grammar.

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I’d like to generate completely random piece of html source, possibly from a grammar. I want to do this in python but I’m not sure how to proceed — is there a library that takes a grammar and just randomly follows its rules, printing the path?

Ideas?

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1 Answer

  1. Editorial Team

    It’s quite easy to roll your own random html generator that looks very much like a top-down parser. Here’s a base!

    def RandomHtml():
    yield '<html><body>'
    yield '<body>'
    yield RandomBody()
    yield '</body></html>'

def RandomBody():
    yield RandomSection()
    if random.randrange(2) == 0:
        yield RandomBody()

def RandomSection():
    yield '<h1>'
    yield RandomSentence()
    yield '</h1>'
    sentences = random.randrange(5, 20)
    for _ in xrange(sentences):
         yield RandomSentence()

def RandomSentence():
    words = random.randrange(5, 15)
    yield (' '.join(RandomWord() for _ in xrange(words)) + '.').capitalize()

def RandomWord():
    chars = random.randrange(2, 10)
    return ''.join(random.choice(string.ascii_lowercase) for _ in xrange(chars))

def Output(generator):
    if isinstance(generator, str):
        print generator
    else:
        for g in generator: Output(g)

Output(RandomHtml())
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