Das deutsche Python-Forum

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#!/usr/bin/env python3

from sys import stdout
import contextlib

with open('help.txt', 'w') as f:
    with contextlib.redirect_stdout(f):
        help()

with open('symbols.txt', 'w') as f:
    with contextlib.redirect_stdout(f):
        help(symbols)

with open('keywords.txt', 'w') as f:
    with contextlib.redirect_stdout(f):
        help(keywords)

with open('topics.txt', 'w') as f:
    with contextlib.redirect_stdout(f):
        help(topics)

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import pydoc
with open('help.txt', 'w') as f:
    helper = pydoc.Helper(output=f)
    helper.intro()

with open('symbols.txt', 'w') as f:
    helper = pydoc.Helper(output=f)
    helper.listsymbols()

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py -3.8 -m pydoc -n localhost

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python3.8 -m pydoc -n localhost

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python -m pydoc
pydoc - the Python documentation tool

...

pydoc -w <name> ...
    Write out the HTML documentation for a module to a file in the current
    directory.  If <name> contains a '/', it is treated as a filename; if
    it names a directory, documentation is written for all the contents.

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import pydoc
from pathlib import Path


TOPICS = tuple(pydoc.help.topics)


def write_topic(topic, root="."):
    if topic.upper() not in TOPICS:
        raise ValueError(f"Topic {topic} not found")
    target = Path(root, topic).with_suffix(".txt")
    with target.open("wt", encoding="utf8") as fd:
        text, _ = pydoc.help._gettopic(topic)
        fd.write(text)


if __name__ == "__main__":
    help_dir = Path.home() / "python-help"
    help_dir.mkdir(exist_ok=True)

    for topic in TOPICS:
        write_topic(topic, help_dir)