[issue2001] Pydoc interactive browsing enhancement

[STINNER Victor]

STINNER Victor  added the comment:

The "getfile" feature has a directory traversal vulnerability and so I propose 
to remove the feature: see bpo-42988.

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[issue2001] Pydoc interactive browsing enhancement

[Nick Coghlan]

Nick Coghlan  added the comment:

Oh, that would be Éric's point 4 that I fixed. OK, no need to create a new 
issue for that one then :)

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[issue2001] Pydoc interactive browsing enhancement

[Nick Coghlan]

Nick Coghlan  added the comment:

r86975 should fix the problem with Windows paths.

I also found an issue where many of the emitted HTML pages contained two HTML 
header sections. The tests were just written in a way that they only looked at 
the second of these header sections, while my browser only looked at the first.

The same commit adjusts the tests to look at the first emitted header section 
and changes the flow in the URL handler to only ever invoke html.page() once 
per request.

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[issue2001] Pydoc interactive browsing enhancement

[Nick Coghlan]

Nick Coghlan  added the comment:

Added the missing CSS file in r86971. Hopefully that will make the buildbots a 
little happier.

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[issue2001] Pydoc interactive browsing enhancement

[Éric Araujo]

Éric Araujo  added the comment:

Nick, you seem to have forgotten to svn add the CSS file.

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[issue2001] Pydoc interactive browsing enhancement

[Giampaolo Rodola']

Changes by Giampaolo Rodola' :


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[issue2001] Pydoc interactive browsing enhancement

[Georg Brandl]

Georg Brandl  added the comment:

The html_getfile() function is Unix-specific: it constructs paths like

path = os.sep + path.replace('%20', ' ')

Consequently, its test fails on Windows:

http://www.python.org/dev/buildbot/all/builders/x86%20XP-4%203.x/builds/3703/steps/test/logs/stdio

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[issue2001] Pydoc interactive browsing enhancement

[Nick Coghlan]

Nick Coghlan  added the comment:

Oh, I also fixed in issue in both the old and new server code that switched 
warnings off globally rather than merely for the operation it was trying to 
disable warnings for.

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[issue2001] Pydoc interactive browsing enhancement

[Nick Coghlan]

Nick Coghlan  added the comment:

Committed in r86962.

Thanks to all involved in getting this from initial submission to final checkin 
:)

Any further changes (including addressing Éric's last few comments) can be 
undertaken as separate issues.

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resolution:  -> accepted
stage: patch review -> committed/rejected
status: open -> closed

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

Thanks for the review and style edits Éric.  I think it's a much better patch 
with the changes and suggestions from you, Nick, and  Alexander.

I'll check my white space settings.  Thanks for noticing it.

As Nick points out, parts of the patch was written with the idea of having the 
text server as a separate module.  So I made the example in it runnable as a 
doctest, as if it was going to be a public module.  As Nick also suggests, the 
server example could be changed to a comment, and it could be condensed quite a 
bit by removing the command line doctest formatting/tutorial style and 
replacing it with a nice single example as it would be seen in a file.

Originally I was  hopping to get a complete rewrite into python 3.0. Then it 
was suggested I try for 2.6.  While doing that, I went way overboard with 
making it have plug in html formatters and converters. (Some people suggested 
they wanted that). In the end, I found that these parts in this patch, (and 
some additional stuff), can be used without the complete rewrite.  And these 
parts really help make pydoc much more usable.  Not the document generating 
parts.  Maybe we can move some of those parts to a pydoc_lib.py file at some 
point, and have an API for creating document generators rather than try to have 
pydoc do everything it self.

As you noticed, I used an html style that is similar to what was in the other 
parts of pydoc.  And yes, it's not pretty.  As Nick points out, "those things 
should be fixed", and I agree.  But I feel it should be a separate patch.  That 
will make it easier to review and keep the html code changes separate from any 
functional changes.  Hopefully, we can update the html so it makes good use of 
the style sheet at that time as well.  ie... a lot of the html code will 
probably be changed in the near future, so don't be too nit-picky about it 
right now.

Other things that I hope to add later, are to have more references in the 
topics and keywords be links.  That one is fairly easy. The function to do that 
is already in pydoc.  Add line numbers and color output to the file view page.  
And eventually look into detecting and using reST to enhance both the html and 
text output in docstrings, topics, and keywords.

As for the imports that arn't at the top of the module, I followed the usage 
that was in pydoc.  It seemed to me that there was probably a conscious reason 
for why it done that way.

I can't find anything I disagree with. 

   Ron

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[issue2001] Pydoc interactive browsing enhancement

[Nick Coghlan]

Nick Coghlan  added the comment:

Regarding question 1 (_start_server docstring):

I have no problem with docstrings on private functions in general. It just 
means they're for the benefit of developers of the module itself rather than 
users of the module. However, in this case, I would move the "example use" out 
of the docstring and into a comment following the docstring.

Regarding questions 2 & 5 (code structure and deprecations):

This whole patch would have been a *lot* easier if the server and GUI 
implementations in pydoc had been properly private from the start. A look at 
the docs makes it fairly obvious that these are meant to be implementation 
details of the command line invocation, but the way they were written meant 
they were exposed as a public standard library API. As a result, we have to 
jump through a lot of hoops to replace them with the new back end.

Since we don't want to maintain the old GUI client or the associated web server 
backend, the deprecations are needed so we can delete them entirely in 3.3. The 
situations Raymond is talking about are cases where we come up with a "better" 
API, but an old API is popular and not really all that flawed within its 
original scope (e.g. getopt vs optparse vs argparse). In such cases, 
deprecation gains us little and causes a lot of hassle. However, in a case like 
this, where people shouldn't have been using the old API anyway and there's a 
mountain of code we want to get rid of, deprecating the associated API is the 
right thing to do.

The nested code structure is a reaction to the concern that caused all the 
additional difficulty - by squirreling all the implementation details away 
inside a small number of functions that are named with leading underscores, we 
eliminate the temptation to rely on the current location of these classes. For 
3.3, I'd like to pursue Ron's idea of pulling the text server out and placing 
it in http.server for general use, with pydoc then retrieving it from there.

Regarding questions 3 & 4 (repetition of bltinlink and HTML dodginess):

Those two sound like issues that should be fixed.

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[issue2001] Pydoc interactive browsing enhancement

[Éric Araujo]

Changes by Éric Araujo :


Added file: http://bugs.python.org/file19847/issue_2001_g.diff

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[issue2001] Pydoc interactive browsing enhancement

[Éric Araujo]

Éric Araujo  added the comment:

First, thanks for your work on this.  I have some feature requests for pydoc 
too and I’m hoping to work with you in the future :)

I found it more efficient (and fair) to make a new diff instead of listing all 
nitpicks and have you do the changes.  issue_2001_g.diff applies cleanly in 
py3k.  I fixed style issues, removed some docstrings in private classes that 
were in my eyes unhelpful (the purpose of the class being clear from its name 
of from a bit of knowledge about http.server), and added the possibility to 
quit the server with EOF or Ctrl-C.

There were a number of trailing spaces in your files.  Suggestions: better 
editor settings, use of hg diff with the color extension, make patchcheck 
(using Python’s makefile).

I have removed the overly long entry from NEWS, I suggest it is used as commit 
message instead.  Here it is, corrected:

“Improve Pydoc interactive browsing (#2001).  Patch by Ron Adam.

* A ``-b`` option to start an enhanced browsing session.
* Allow ``-b`` and ``-p`` options to be used together.
* Specifying port 0 will pick an arbitrary unused socket port.
* A new ``browse()`` function to start the new server and browser.
* Show Python version information in the header.
* A *Get* field which takes the same input as the ``help()`` function.
* A *Search* field which replaces the Tkinter search box.
* Lnks to *Module Index*, *Topics*, and *Keywords*.
* Improved source file viewing.
* An ``HTMLDoc.filelink()`` method.
* The ``-g`` option and the ``gui()`` and ``serve()`` functions are
deprecated.”

issue_2001_f+1.diff shows only the changes I made on top of yours (+ some 
changes from the py3k branch).  Please ask any question you may have about them.


Now, those style issues were only the easy parts.  Remaining issues (I mean 
they’re issues to me, you or Nick may disagree):

1) _start_server has a bit of documentation in its docstring, but it’s a 
private function.  Also, two lines are commented so that “make doctest” does 
not run them, but that is non-obvious and breaks the flow of the text.  I 
recommend doing a combination of those things, at your call: Move those docs to 
a public function docstring and/or reST doc; move those docs to a comment; 
don’t use the doctest as test but add a unit test; remove most of the docstring.

2) Functions in methods in classes in functions don’t look great to me.  I 
understand pydoc tries not to import things before it knows it needs them, and 
it’s also a way of keeping things private, but I think flat is better (more 
readable) than nested.

3) bltinlink is defined six times.  Global (private) function please? :)

4) The HTML has two html elements, two doctypes, an invalid clear attribute on 
a div element.

5) Last but not least, the deprecations.  A few developers had a chat with 
Raymond Hettinger on IRC yesterday about the cost of deprecations and removals. 
 His defended that their harm (forcing people to change their code) was bigger 
than their usefulness (catering to esthetic tastes of core developers).  How 
about we arrange the docs and docstrings in order to make the new ways 
prominent and deprecate the old ones, without any actual code deprecation?

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Added file: http://bugs.python.org/file19846/issue_2001_f+1.diff

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[issue2001] Pydoc interactive browsing enhancement

[Éric Araujo]

Éric Araujo  added the comment:

I am reviewing this and making some edits to the patch.  Will post this week.

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

Here is the latest patch with tests.

In order to test the html pages I separated out the URL handler.  So now we 
have three new functions.

pydoc._start_server(urlhandler, port)
pydoc._url_handler(url, content_type="text/html")
pydoc.browse(port=0, *, open_browser=True)

A css file:   pydoc_data/_pydoc.css

The tests in test_pydoc.py, test that the server can be started and shutdown 
without an error.  And test that the _url_handler() will send back html pages 
with the correct title for all the different type of requests that it can 
handle.

I think this is ready for a final review now.

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Added file: http://bugs.python.org/file19727/issue2001_f.diff

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

I added an empty _pydoc.css file.  The server does read it and you'll be able 
to play around with it, but don't expect it to be pretty if you do until the 
rest of the html is updated.

Should I put that in the pydoc_data?

It just needs tests now, which I'll be working on as time permits over the next 
few days.  (And any other minor details we find.)

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Added file: http://bugs.python.org/file19644/issue2001_e.diff

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Re: [issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

On 11/19/2010 08:21 AM, Alexander Belopolsky wrote:


Alexander Belopolsky  added the comment:

On Thu, Nov 18, 2010 at 2:37 AM, Ron Adam  wrote:
..

I'll try reading and writing directly to the socket and working up some tests 
from that.
I don't suppose there's something like that already in the test suite I can 
copy?


I believe you can find relevant code in test/test_httpservers.py.


Thanks I'll check it out.


What I had in mind was simpler:test_pydoc already checks html output
for a module, but this test did not fail after I applied your patch.


When I put the old server and gui() function back the existing tests passed 
with changes.  Which is good.  Also the old tests didn't actually test the 
server and the tk interface.



There should be something in the tests that checks that the new
navigation bar is generated correctly.


I'm going to work on this today.

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

Here is the patch in the current state which includes the changes in 
issue2001_c.diff as well as most of the changes Éric suggested.

Still to do:
  * Use the with statement in several places to ensure closing.
  * Add tests for the server.

I did try to make the header a bit less cluttered, but I'm not completely happy 
with it yet, but I think it will be good enough for now.  Fixing the HTML 
probably should be a separate issue where we can add a style sheet at the same 
time.  Lets get this patch in first.

This is also reitveld:  

http://codereview.appspot.com/3151042/

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Added file: http://bugs.python.org/file19642/issue2001_d.diff

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[issue2001] Pydoc interactive browsing enhancement

[Nick Coghlan]

Nick Coghlan  added the comment:

Gah, I accidentally generated a diff that included some unrelated changes to 
urrlib (and its tests) for a different issue I had been working on, and Ron's 
subsequent patch picked them up. I then misinterpreted "left them alone" to 
mean "didn't include them in the regenerated patch". Sorry about that - taking 
those changes out was the right thing to do.

The test_pyclbr change was necessary at the time (the new code isn't 
particularly class browser friendly, so the tests referencing pydoc started 
failing), but it shouldn't be needed now that the server and client 
implementation details are once again hidden inside function scopes.

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[issue2001] Pydoc interactive browsing enhancement

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

issue2001_c.diff is the same as issue2001_b.diff, but without urlparse changes 
and with minor modifications to pydoc.rst resolving a conflict with a recent 
commit.  I have also uploaded the same patch to rietveld:

http://codereview.appspot.com/3187042

Does anyone know how to properly subscribe rep...@bugs.python.org to the 
Rietveld issue so that we see reviews here?

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Added file: http://bugs.python.org/file19638/issue2001_c.diff

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[issue2001] Pydoc interactive browsing enhancement

[Giampaolo Rodola']

Changes by Giampaolo Rodola' :


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[issue2001] Pydoc interactive browsing enhancement

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

issue2001_b.diff patch includes changes to urllib.  Is this intentional?  Is it 
a bug fix, a feature?  There is no mention in the NEWS file.  If these changes 
are needed for pydoc enhancements, I would like to separate them in its own 
issue and commit separately.

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[issue2001] Pydoc interactive browsing enhancement

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

On Thu, Nov 18, 2010 at 2:37 AM, Ron Adam  wrote:
..
> I'll try reading and writing directly to the socket and working up some tests 
> from that.
> I don't suppose there's something like that already in the test suite I can 
> copy?

I believe you can find relevant code in test/test_httpservers.py.
What I had in mind was simpler: test_pydoc already checks html output
for a module, but this test did not fail after I applied your patch.
There should be something in the tests that checks that the new
navigation bar is generated correctly.

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

Sense these features reuse other parts of pydoc, they are are covered to some 
degree by the existing tests.  

An easy test would be to just start the server and then shut it down after a 
short timeout.  Better than nothing.

I'll try reading and writing directly to the socket and working up some tests 
from that.  I don't suppose there's something like that already in the test 
suite I can copy?

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

Thanks for the review Éric!  The more eyes on this the better it will be.

I'm not familiar with rietveld yet.  But no time like the present to get 
started.  Here's the link.

   http://codereview.appspot.com/3151042/


I didn't play around with the html too much. Mostly I just wanted to get it to 
work for now.  I plan on adding support for style sheets, so a lot of the html 
code will be updated at that time.

Alex, the version info is just what sys.version returns, that was just easy to 
do, we can probably trim that down a bit.

The "Index of Modules" can be shortened to "Index" or "Modules".

I can have the get, and search box's always be two lines.  Something like...

Python 3.2a4/rev# Get[]Index
Platform  Search []Topics : Keywords

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[issue2001] Pydoc interactive browsing enhancement

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

Shouldn't tests for new features added to Lib/test/test_pydoc.py?

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[issue2001] Pydoc interactive browsing enhancement

[Sridhar Ratnakumar]

Changes by Sridhar Ratnakumar :


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[issue2001] Pydoc interactive browsing enhancement

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

I am attaching pydoc.png screenshot that shows how the new navigation bar is 
rendered in my browser.  It looks a little bit busy and I don't like 
(get)/(search) buttons jumping below the text boxes when the browser window is 
is not wide enough.

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Added file: http://bugs.python.org/file19630/pydoc.png

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[issue2001] Pydoc interactive browsing enhancement

[Éric Araujo]

Éric Araujo  added the comment:

Review time!  Please use rietveld for big patches in the future.

I had started with a list of remarks in same order than the code and minor 
remarks grouped at the end, but I see now that all my remarks are minor, since 
I have found no real code problem (I don’t know pydoc as well as you :)  If my 
message is hard to follow, I’ll redo it on rietveld or directly update your 
patch (I’m nitpicky, so I can volunteer to share the work).  Thanks for your 
continued effort and high-quality result!

* Misc/NEWS: Your entry has to be proper reST.

* pydoc.rst:
+documentation pages.  (The :option:`-g` option is depreciated.)
:option: marks an option for python itself.  Use  instead.  See #9312 for 
more info.  (Also fix the typo, which appears twice in the diff.)

+:program:`pydoc` ``-b``
:program:`pydoc -b` works.

“Each served page has a navigation bar at the top where you can 'get' help on 
an individual item, 'search' all modules with a keyword in their synopsis line, 
and goto indexes for 'modules', 'topics' and 'keywords'.”
What do the apostrophes mean?

* urllib/parse.py, test_urlparse.py: Unrelated changes?

* pydoc.py
+import sys, imp, os, re, inspect, builtins, pkgutil, time, warnings
Why not take the opportunity to put each import on its own line, for source and 
diff readability?

+return 'no documentation found for %s' % repr(topic), ''
You can simplify that to “'... %r' % topic”.  (I’m assuming topic is never a 
tuple.)

+if type(target) is type(''):
I see you’re following the style of the rest of the file.  Modernizing that to 
isinstance is probably out of scope for this patch.  (Have I said that the HTML 
is horrible too?)

+msg = """The pydoc.serve() function is deprecated."""
Such messages usually don’t start with a capital nor end with a period.

+msg = """The pydoc.gui() function and "pydoc -g" option are depreciated,
+use "pydoc.browse() function and "pydoc -b" option instead."""
Won’t this have strange leading indentation on the second line?  I’d recommend 
printing two lines that wrap under 80 characters:

msg = ('the pydoc.gui() function and "pydoc -g" option are deprecated,'
   'use pydoc.browse() and "pydoc -b" instead')


+#...webbrowser.open(serverthread.url)
+#True
I don’t like commented-out example code.  I prefer it to work or not be there :)

“it's” is not a possessive, you want “its”.

+import http.server
Aren’t function-level imports frowned upon?

+if self.path.endswith('.css'):
+content_type = 'text/css'
+else:
+content_type = 'text/html'
It’s good practice to add the “charset” parameter to specify the character 
encoding.

+if url[-5:] == '.html': url = url[:-5]
Please always put two statements on two lines.

+except IOError as value:
You don’t need to get the instance if you don’t use it in the following block 
(IOW, remove “ as value”).

+fp.close()
Please use the with statement.

+server_help_msg = """Python Version: %s
“version” need not be capitalized IMO.

-""" % (cmd, os.sep, cmd, cmd, cmd, cmd, os.sep))
+""" % (cmd, os.sep, cmd, cmd, cmd, cmd, cmd, os.sep))
Feel free to replace all those %s by %(cmd)s or {cmd} for readability.


* Assorted nitpicks, which are not blocking:
- “command line” needs an hyphen when used as an adjective (in whatsnew/3.2.rst)
- a→an in “a HTTP server” (pydoc.py)
- Use two spaces: “local machine. Port” (twice); “page. Use”.
- “To determine what the client is asking for check the URL”: I’d add a comma 
after “for”.
- You can remove the parentheses around “The "-g" option is deprecated” and put 
it on the preceding line.
- Feel free to sprinkle a few more blanklines here and there, especially before 
class and function definition.

> Do you agree that the browse function should be public?
I’ll leave that to Nick.

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[issue2001] Pydoc interactive browsing enhancement

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

Ron,

I added a header to the text documentation clarifying that pydoc-generated 
documentation is not authoritative. See issue 10446.  I did add it to the HTML 
page because it was not obvious where to put it and I knew that you are 
changing layout anyways.  Please consider including the same text somewhere in 
HTML pages.

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

I just noticed I used "depreciated" in place of "deprecated" in one of the doc 
strings.  I can upload a new patch with that fixed.

Before I do that, is there any thing else I can do?

Do you agree that the browse function should be public?  
If not, what do we tell people to use instead of gui(), sense that will be 
deprecated?

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Changes by Ron Adam :


Removed file: http://bugs.python.org/file19476/pydoc_r86133.diff

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Changes by Ron Adam :


Removed file: http://bugs.python.org/file19604/issue2001_a.diff

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

This should be done or very close to done.

The -g option, gui(), and serve() functions are deprecated.

The new features are browse(port, *, open_browser=True), and a '-b' option.  
The '-p port' option does browse(port=port, open_browser=False), so 
_startserver() does not need to be part of the API.  If anyone wants to access 
the server directly, then we can discuss making it it's own module, or a 
submodule in a package.

Because we deprecated the gui() function, I figured we need to make browse() 
public.  The only reason it would need to be private is if we want a different 
name or signature.  (Any thoughts?)

I left Lib/urllib/parse.py, Lib/test/test_pyclbr.py, and 
Lib/test/test_urlparse.py alone.  I presumed you fixed bugs in them that needed 
to be fixed anyway.

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Added file: http://bugs.python.org/file19613/issue2001_b.diff

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[issue2001] Pydoc interactive browsing enhancement

[Nick Coghlan]

Nick Coghlan  added the comment:

Just call warnings.warn with an appropriate message, a category of 
DeprecationWarning and a stacklevel of 2 (so the warning will refer to the 
function's caller rather than to the pydoc code).

It's basically the example from the warnings.warn docs.

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

Ok, here is the latest patch for review.  "issue2001_a.diff'

I restored the pydoc.py file and then put most of the new code in these two 
functions,

  _startserver(urlhandler, port)
  _browse(port=0, *, open_browser=True)

This creates a bettor organized file, and reduces the number of names with 
leading underscores.  As far as I know you can't import things that are located 
inside a function.

I still need to depreciate the '-g' option and the gui() function along with 
the old server parts.

Is there a guide on how to depreciate things?

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Added file: http://bugs.python.org/file19604/issue2001_a.diff

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[issue2001] Pydoc interactive browsing enhancement

[Nick Coghlan]

Nick Coghlan  added the comment:

As per python-dev discussion, we'll keep the old server and GUI implementations 
intact (but deprecated). The -g command line option will start the old 
implementation, -p and -b will start the new one.

The APIs to activate the new implementation will start with a leading 
underscore and can be whatever makes the most sense for what you're doing (the 
example signatures in my last message are one possibility, but don't take them 
as mandatory).

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[issue2001] Pydoc interactive browsing enhancement

[Nick Coghlan]

Nick Coghlan  added the comment:

Yeah, I'll ask for feedback on python-dev regarding the API breakage.

If we decide not to break the existing API, I'd suggest the following:

- keep both the old serve() and the old gui() (with DeprecationWarning added to 
both) (I'd forgotten your point in the previous python-dev thread that gui() 
would need changes to work with the new server, which isn't worth the hassle)

- use _startserver(port=0) and _browse(port, *, start=False) for the new 
components (with the -b option invoking _browse with start=True)

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

> What about http://bugs.python.org/issue2001#msg114326 ?

Thanks for the reminder.


To Nick:

>However, the public (albeit undocumented) nature of the APIs >implementing the 
>old Tk GUI means I'm not comfortable committing the >patch in a form that 
>simply drops them without going through a >deprecation period first.

I think it would be ok sense this is a 'user' interface rather than a 
programming interface, but it won't hurt to ask specifically about this on 
python dev.  I got the impression that pydoc is considered a 'user' tool like 
idle, that just happens to live in lib, so the rules aren't considered to be 
quite as strict as it would be if it was a module meant to be used by other 
modules or programs.


>3. A serve() function to start the web server component should be >added back 
>in

There is a _startserver() function.  The leading  underscore can be removed, or 
it can be renamed to serve.  A serve() function could also just call 
_startserver().


>2. The gui() function should still open the Tkinter GUI,
>and the -g option should be retained with its old functionality. >Invoking 
>this function should trigger DeprecationWarning.
>
>4. The new behaviour of opening the web client can be provided
>as a "browse()" function (that accepts the port number the
>server is listening on as an argument).


After the patch the gui() function starts the server with a server text command 
window, and opens the browser to the correct page.  If you close the browser, 
you can use 'b' at the server prompt to reopen the browser at the address it is 
serving.

It sounds like you want "serve()" to just start the server. and "browse()" to 
just start the browser.  The gui() function does both in one step.

What would be the equivalent new way of doing both in one step, if gui() 
retains the old tk behavior?

Cheers, Ron

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[issue2001] Pydoc interactive browsing enhancement

[René Liebscher]

René Liebscher  added the comment:

What about http://bugs.python.org/issue2001#msg114326 ?

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[issue2001] Pydoc interactive browsing enhancement

[Nick Coghlan]

Changes by Nick Coghlan :


Added file: http://bugs.python.org/file19534/issue2001_ncoghlan_cleanup.diff

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[issue2001] Pydoc interactive browsing enhancement

[Nick Coghlan]

Nick Coghlan  added the comment:

I'd actually started typing out the command to commit this before it finally 
clicked that the patch changes public APIs of the pydoc module in incompatible 
ways. Sure, they aren't documented, but the fact they aren't protected by an 
underscore means I'm not comfortable with the idea of removing them or 
radically change their functionality without going through a deprecation period 
first.

I've attached my version of the patch which includes some additional 
documentation cleanups and a tweak to test_pyclbr (since the pydoc changes 
broke that test through no fault of their own).

However, the public (albeit undocumented) nature of the APIs implementing the 
old Tk GUI means I'm not comfortable committing the patch in a form that simply 
drops them without going through a deprecation period first.

So, the way forward from here:
1. The good news is beta 1 has been pushed back to December 4 for other 
reasons, so there's still more time to work on this
2. The gui() function should still open the Tkinter GUI, and the -g option 
should be retained with its old functionality. Invoking this function should 
trigger DeprecationWarning.
3. A serve() function to start the web server component should be added back in
4. The new behaviour of opening the web client can be provided as a "browse()" 
function (that accepts the port number the server is listening on as an 
argument).

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

Here you go Nick.  One file with Underscores for the new class's and functions. 
 Where there was some overlap in names, like where some of the older server 
class's were reused, but don't have exactly the same behavior, I started those 
with underscores also.

This should make it easier for you to review and/or make adjustments where it's 
needed.

--
Added file: http://bugs.python.org/file19476/pydoc_r86133.diff

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Changes by Ron Adam :


Removed file: http://bugs.python.org/file18271/pydoc_server4.diff

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Changes by Ron Adam :


Removed file: http://bugs.python.org/file18165/pydoc_server3.diff

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Changes by Ron Adam :


Removed file: http://bugs.python.org/file16517/pydoc_gui.diff

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[issue2001] Pydoc interactive browsing enhancement

[Nick Coghlan]

Nick Coghlan  added the comment:

On Wed, Nov 3, 2010 at 2:17 AM, Ron Adam  wrote:
>
> Ron Adam  added the comment:
>
> Nick, I can update the patch and move the server back into pydoc.py if that 
> will help you get this into 3.2 beta.

Yep, probably the best option 3.2 - then make a new issue about making
those public in the standard library (since they aren't really
pydoc-specific).

> I can also changed the docstrings of the new parts to # comments.

Just mark the various names with an underscore so people know the
current names aren't final. There's no harm in leaving the docstrings
in place if you do that.

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

Nick, I can update the patch and move the server back into pydoc.py if that 
will help you get this into 3.2 beta.

I can also changed the docstrings of the new parts to # comments.

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[issue2001] Pydoc interactive browsing enhancement

[Nick Coghlan]

Nick Coghlan  added the comment:

Unassigning from ping given the lack of comments - I should be able to have a 
look at this in time for beta 1

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[issue2001] Pydoc interactive browsing enhancement

[René Liebscher]

Changes by René Liebscher :


--
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[issue2001] Pydoc interactive browsing enhancement

[Mark Lawrence]

Mark Lawrence  added the comment:

I've closed #902061 as a duplicate of this, but please keep in mind msg75324 
from that issue.

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

New diff file.

Removed the '-g' option and added a '-b' option.

Using the '-g' option will now bring up pydoc options help.

Added a simple server command prompt with 'b' and 'q' choices
to open a browser and quit the server.

Allow the '-p' option to be use along with the  '-b' option.

Catch the error when the port is already in use and print a nice error instead 
of a traceback with an exception.

The port number now defaults to port 0 and uses a random unused port.

Changed the name of the server to better describe what it does to
http._text_server_thread.py.  Used a leading underscore on the name to
indicate it is a private module and give it time to mature a bit more
before making it public.

Rewrote the _text_server_thread.py example in its __doc__ string so
it passes a doctest.

--
Added file: http://bugs.python.org/file18271/pydoc_server4.diff

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

I also put in a temporary fix to skip the test file that was causing it to 
crash when doing a search.  It's marked as such and can be removed once the bug 
is fixed.

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

Link to the discussion on the python-dev new group.

Subject: [isssue 2001] Pydoc enhancement patch questions
http://permalink.gmane.org/gmane.comp.python.devel/115474

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Changes by Ron Adam :


Removed file: http://bugs.python.org/file18163/pydoc_server2.diff

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Changes by Ron Adam :


Removed file: http://bugs.python.org/file18160/pydoc_server.diff

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

Ok, on the "!" marks.

The Segmentation fault exits python and isn't catchable as far as I know. It's 
happens in the compiled tokenize.c file. The python side error detection 
doesn't get a chance to catch it.

The problem is present without the patch applied and when using the console 
help so it wasn't anything I did.  I could use a hack to bypass that particular 
file, but I don't think that is the correct answer to this particular problem.  
Better to get that issue resolved first.

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[issue2001] Pydoc interactive browsing enhancement

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

OK, the crash is due to issue9319, but as far as I understand, the faulty code 
is in the error handling branch, so there must be a bug in your code as well.

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[issue2001] Pydoc interactive browsing enhancement

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

Hmm.  Still no luck


$ ./python.exe -m pydoc -g
Server ready at: http://localhost:7464/
Segmentation fault


The Segmentation fault happens after I enter pydoc in the search window and 
press the "Search!" button.

BTW, please remove !'s from the labels.

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

Ok, spell, check and attribute error corrected.

I agree on the -p / -g issue.

I'll bring this up on python dev.


Thanks for the reviews and feedback.  It really helps.

--
Added file: http://bugs.python.org/file18165/pydoc_server3.diff

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[issue2001] Pydoc interactive browsing enhancement

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

Ron,

Your latest patch does not work for me:


$ ./python.exe -m pydoc -g
Traceback (most recent call last):
  File "/Users/sasha/Work/python-svn/py3k-commit/Lib/runpy.py", line 160, in 
_run_module_as_main
"__main__", fname, loader, pkg_name)
  File "/Users/sasha/Work/python-svn/py3k-commit/Lib/runpy.py", line 73, in 
_run_code
exec(code, run_globals)
  File "/Users/sasha/Work/python-svn/py3k-commit/Lib/pydoc.py", line 2315, in 

if __name__ == '__main__': cli()
  File "/Users/sasha/Work/python-svn/py3k-commit/Lib/pydoc.py", line 2259, in 
cli
gui()
  File "/Users/sasha/Work/python-svn/py3k-commit/Lib/pydoc.py", line , in 
gui
serverthread = http.text_server.startserver(url_handler, port)
AttributeError: 'module' object has no attribute 'text_server'

--
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[issue2001] Pydoc interactive browsing enhancement

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

+:program:`pydoc` :option:`-g` will start the server and additionally open a web
+browser to a module index page.  Each served page has a navagation bar at the
+top where you can 'get' help on a individual item, 'find' all modules with a
+keyword in thier synopsis line, and goto indexes for 'modules', 'topics' and
+'keywords'.

I am not sure I like the fact that the browser is started automatically.   
Please bring this up on python-dev.  This may be an opportunity to rethink 
pydoc command line switches.  For example, -p and -g are currently exclusive, 
but it would make sense for -g to start server on the port specified by -p.

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

Sorry, will do...

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[issue2001] Pydoc interactive browsing enhancement

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

s/navagation/navigation/

Please spell-check your changes.

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[issue2001] Pydoc interactive browsing enhancement

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

On Fri, Jul 23, 2010 at 4:08 PM, Ron Adam  wrote:
..
> Here's the new patch with the Misc/NEWS and pydoc.rst additions added to it.

s/Romoved/Removed/

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

Here's the new patch with the Misc/NEWS and pydoc.rst additions added to it.

I'm not sure if local_text_server is the best name for the server module. In 
pydoc it's a local server, but it may not be limited to that use. I've also 
considered text_server, text_html_server, or simple_text_server.

--
Added file: http://bugs.python.org/file18163/pydoc_server2.diff

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[issue2001] Pydoc interactive browsing enhancement

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

Ron,

Can you add a Misc/NEWS entry summarizing your change?  Also, please check if 
any changes need to be made to ReST documentation, Doc/library/pydoc.rst .


Ka-Ping,

Do you want to hold on to this, you can I take it over?

--
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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

Thank You for the review Mark. It's very much appreciated.

I took another look at it and decided to offer another patch that moves the 
html/text server to the http package where the rest of the server stuff is.

I also corrected the example in it. Everything still works the same as when 
mark tested it.

This makes the diff file easier to read and tell what's going on.

--
Added file: http://bugs.python.org/file18160/pydoc_server.diff

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[issue2001] Pydoc interactive browsing enhancement

[Mark Lawrence]

Mark Lawrence  added the comment:

The patch seems clean to me.  Applied patch to unit test and ran it, tests 
failed, then applied patch to module, tests passed.  Also tried import 
pydoc;pydoc.gui() from the command line, the output looked fine to me.  Tested 
on Windows Vista with Firefox.  Could someone commit this please.

--
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[issue2001] Pydoc interactive browsing enhancement

[Benjamin Peterson]

Changes by Benjamin Peterson :


--
stage:  -> patch review

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[issue2001] Pydoc interactive browsing enhancement

[Sridhar Ratnakumar]

Changes by Sridhar Ratnakumar :


--
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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam  added the comment:

Missed a buffer write in the gettopic() method. Fixed.
Plus some minor doc string changes.

Can someone change the stage to "patch review".  I can't do that myself.

Or is there something else I need to do first?

--
Added file: http://bugs.python.org/file16517/pydoc_gui.diff

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Changes by Ron Adam :


Removed file: http://bugs.python.org/file16411/pydoc_gui.diff

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[issue2001] Pydoc interactive browsing enhancement

[Nick Coghlan]

Changes by Nick Coghlan :


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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Changes by Ron Adam <[EMAIL PROTECTED]>:


Removed file: http://bugs.python.org/file9448/pydocnotk.diff

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Changes by Ron Adam <[EMAIL PROTECTED]>:


Removed file: http://bugs.python.org/file9423/pydocnotk.diff

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Changes by Ron Adam <[EMAIL PROTECTED]>:


Removed file: http://bugs.python.org/file9350/pydocnotk.diff

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam <[EMAIL PROTECTED]> added the comment:

New patch to replace outdated patch due to other changes to pydoc.

The easies way to try this out is to:

>> import pydoc
>> pydoc.gui()

Try it before and after the patch.  I think most people will prefer the
patch.

Added file: http://bugs.python.org/file11321/pydoc_gui_.diff

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[issue2001] Pydoc interactive browsing enhancement

[Sean Reifschneider]

Changes by Sean Reifschneider <[EMAIL PROTECTED]>:


--
assignee:  -> ping
nosy: +ping
priority:  -> normal

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[issue2001] Pydoc interactive browsing enhancement

[A.M. Kuchling]

Changes by A.M. Kuchling:


--
keywords: +patch

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam added the comment:

Remade the diff with correct directory name so it patches correctly.

Is there a way to add the patch keyword?

Added file: http://bugs.python.org/file9448/pydocnotk.diff

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Ron Adam added the comment:

Added a topics and keywords index choices to the navbar.

This gives the web interface the same functionality as the cli interface.

Fixed the -p option which I had missed.

Added file: http://bugs.python.org/file9423/pydocnotk.diff

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

Changes by Ron Adam:


--
versions: +Python 2.6

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[issue2001] Pydoc interactive browsing enhancement

[Giampaolo Rodola']

Changes by Giampaolo Rodola':


--
nosy: +giampaolo.rodola

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[issue2001] Pydoc interactive browsing enhancement

[Ron Adam]

New submission from Ron Adam:

This patch removes the gui tk control panel and replaces it with a
navigation bar on the served web pages.

This offers a nicer user experience because one no longer needs to jump
back and forth between windows.

The navbar supports getting specific modules, searching modules, and
returning to the main module index. I believe the file source view is
safer also.

Possible issues...
 
+ Restarting the server without ending it causes an error do to the port
already being used.  I think this is not new.

+ There may be some brakage if other applications depend on the tk
interface, but I don't think any do.  Or at least none that I know of.

+ I haven't tested this on windows.  (It works well on Ubuntu 7.10)

--
components: Library (Lib)
files: pydocnotk.diff
messages: 62012
nosy: ron_adam
severity: normal
status: open
title: Pydoc interactive browsing enhancement
type: rfe
Added file: http://bugs.python.org/file9350/pydocnotk.diff

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