blocks|key|316156|text|如果你真的帮助(Help)，你会看到：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|316157|Help+on+_Helper+in+module+site+object:

class+_Helper(__builtin__.object)
+%7C++Define+the+builtin+'help'.
+%7C++This+is+a+wrapper+around+pydoc.help+(with+a+twist).|code-block|syntax|javascript|316158|rest被剪掉|316159|所以-你应该看看pydoc模块-将有一个或多个方法将help(something)作为字符串返回……|offset|length|style|CODE|316160|entityMap^0|0|0|0|Q|F|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@$K|U|L|V|M|N]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

If you do help(help) you'll see:

<pre><code>Help on _Helper in module site object:

class _Helper(__builtin__.object)
 | Define the builtin 'help'.
 | This is a wrapper around pydoc.help (with a twist).
</code></pre>

[rest snipped]

So - you should be looking at the pydoc module - there's going to be a method or methods that return what <code>help(something)</code> does as a string...

blocks|key|533215|text|这有点老生常谈(而且可能有更好的解决方案)，但这是有效的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|533216|import+sys
import+pydoc

def+output_help_to_file(filepath,+request):
++++f+=+open(filepath,+'w')
++++sys.stdout+=+f
++++pydoc.help(request)
++++f.close()
++++sys.stdout+=+sys.__stdout__
++++return|code-block|syntax|javascript|533217|然后..。|533218|>>>+output_help_to_file(r'test.txt',+'re')|533219|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

This is a bit hackish (and there's probably a better solution somewhere), but this works:

<pre><code>import sys
import pydoc

def output_help_to_file(filepath, request):
 f = open(filepath, 'w')
 sys.stdout = f
 pydoc.help(request)
 f.close()
 sys.stdout = sys.__stdout__
 return
</code></pre>

And then...

<pre><code>&gt;&gt;&gt; output_help_to_file(r'test.txt', 're')
</code></pre>

blocks|key|316248|text|pydoc.render_doc(thing)以字符串形式获取thing的帮助文本。pydoc的其他部分，如pydoc.text和pydoc.html，可以帮助您将其写入文件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|316249|在linux中使用-w修饰符将把输出写到当前目录中的html，例如；|offset|length|style|CODE|316250|pydoc+-w+Rpi.GPIO|code-block|syntax|javascript|316251|将命令help(Rpi.GPIO)显示的所有help()文本放入一个格式良好的文件Rpi.GPIO.html中，该文件位于外壳程序的当前目录中|316252|entityMap^0|0|9|2|0|0|3|E|M|6|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@$D|S|E|T|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|U|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|V|8|@$D|W|E|X|F|G]|$D|Y|E|Z|F|G]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|P|$]]

pydoc.render_doc(thing) to get thing's help text as a string. Other parts of pydoc like pydoc.text and pydoc.html can help you write it to a file.

Using the <code>-w</code> modifier in linux will write the output to a html in the current directory, for example;

<pre><code>pydoc -w Rpi.GPIO
</code></pre>

Puts all the <code>help()</code> text that would be presented from the command <code>help(Rpi.GPIO)</code> into a nicely formatted file Rpi.GPIO.html, in the current directory of the shell

blocks|key|533332|text|在Windows中，只需打开Windows命令行窗口，转到Python安装的Lib子文件夹，然后输入|type|unstyled|depth|inlineStyleRanges|entityRanges|data|533333|python+pydoc.py+moduleName.memberName+>+c:\myFolder\memberName.txt|533334|将moduleName中的属性或方法memberName的文档放入文件memberName.txt。如果你想要一个对象在模块的层次结构中往下走，只需要放更多的点。例如|533335|python+pydoc.py+wx.lib.agw.ultimatelistctrl+>+c:\myFolder\UltimateListCtrl.txt|533336|将wxPython包中agw包中有关UltimateListCtrl控件的文档放入UltimateListCtrl.txt。|533337|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|N|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|O|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

In Windows, just open up a Windows Command Line window, go to the Lib subfolder of your Python installation, and type

python pydoc.py moduleName.memberName > c:\myFolder\memberName.txt

to put the documentation for the property or method memberName in moduleName into the file memberName.txt. If you want an object further down the hierarchy of the module, just put more dots. For example

python pydoc.py wx.lib.agw.ultimatelistctrl > c:\myFolder\UltimateListCtrl.txt

to put the documentation on the UltimateListCtrl control in the agw package in the wxPython package into UltimateListCtrl.txt.

blocks|key|533384|text|这是一个老问题，但较新的recommended通用解决方案(针对Python+3.4%2B)用于编写print()到终端使用contextlib.redirect_stdout的函数的输出|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|533385|import+contextlib

def+write_help(func,+out_file):
++++with+open(out_file,+'w')+as+f:
++++++++with+contextlib.redirect_stdout(f):
++++++++++++help(func)|code-block|syntax|javascript|533386|使用示例：|533387|write_help(int,+'test.txt')|533388|entityMap|0|LINK|mutability|MUTABLE|url|https://twitter.com/raymondh/status/1030160198600548352^0|1C|7|1O|Q|C|B|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@$9|11|A|12|1|13]]|E|$]]|$1|F|3|G|5|H|7|14|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|15|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|16|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|17|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

An old question but the newer <a href="https://twitter.com/raymondh/status/1030160198600548352" rel="noreferrer">recommended</a> generic solution (for Python 3.4+) for writing the output of functions that <code>print()</code> to terminal is using <code>contextlib.redirect_stdout</code>:

<pre><code>import contextlib

def write_help(func, out_file):
 with open(out_file, 'w') as f:
 with contextlib.redirect_stdout(f):
 help(func)
</code></pre>

Usage example:

<pre><code>write_help(int, 'test.txt')
</code></pre>

blocks|key|316386|text|选择的答案对我不起作用，所以我做了更多的搜索，找到了一些在Daniweb上有效的东西。功劳归功于素食。https://www.daniweb.com/programming/software-development/threads/20774/starting-python/8#post1306519|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|316387|#+simplified+version+of+sending+help()+output+to+a+file
import+sys
#+save+present+stdout
out+=+sys.stdout
fname+=+"help_print7.txt"
#+set+stdout+to+file+handle
sys.stdout+=+open(fname,+"w")
#+run+your+help+code
#+its+console+output+goes+to+the+file+now
help("print")
sys.stdout.close()
#+reset+stdout
sys.stdout+=+out|code-block|syntax|javascript|316388|entityMap|0|LINK|mutability|MUTABLE|url|https://www.daniweb.com/programming/software-development/threads/20774/starting-python/8#post1306519^0|1F|2S|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

Selected answer didn't work for me, so I did a little more searching and found something that worked on Daniweb. Credit goes to vegaseat. <a href="https://www.daniweb.com/programming/software-development/threads/20774/starting-python/8#post1306519" rel="nofollow noreferrer">https://www.daniweb.com/programming/software-development/threads/20774/starting-python/8#post1306519</a>

<pre><code># simplified version of sending help() output to a file
import sys
# save present stdout
out = sys.stdout
fname = "help_print7.txt"
# set stdout to file handle
sys.stdout = open(fname, "w")
# run your help code
# its console output goes to the file now
help("print")
sys.stdout.close()
# reset stdout
sys.stdout = out
</code></pre>

blocks|key|316467|text|要获得“干净”的文本输出，就像内置的help()所提供的那样，并且适合导出到文件或其他任何文件，您可以使用以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|316468|>>>+import+pydoc
>>>+pydoc.render_doc(len,+renderer=pydoc.plaintext)
'Python+Library+Documentation:+built-in+function+len+in+module+builtins\n\nlen(obj,+/)\n++++Return+the+number+of+items+in+a+container.\n'|code-block|syntax|javascript|316469|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

To get a "clean" text output, just as the built-in help() would deliver, and suitable for exporting to a file or anything else, you can use the following:

<pre class="lang-py prettyprint-override"><code>&gt;&gt;&gt; import pydoc
&gt;&gt;&gt; pydoc.render_doc(len, renderer=pydoc.plaintext)
'Python Library Documentation: built-in function len in module builtins\n\nlen(obj, /)\n Return the number of items in a container.\n'
</code></pre>

I've got a python package which outputs considerable help text from: <code>help(package)</code> 

I would like to export this help text to a file, in the format in which it's displayed by <code>help(package)</code>

How might I go about this?

How do I export the output of Python's built-in help() function

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个python包，它输出了相当多的帮助文本：help(package)我想以help(package)显示的格式将此帮助文本导出到文件中我该怎么做呢？

问如何导出Python内置help()函数的输出
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问如何导出Python内置help()函数的输出EN