Reader Pipe Error Running from Source?

JimmXinu · 10-31-2019, 11:50 AM

I'm seeing errors opening the book reader on epubs while running from source on windows.

I have 4.2.0 binaries installed and I'm current to 6e2122df1754cdc2c5ab32cc13402281b75d19c3 in the source.

The error I get is:

Code:

calibre, version 4.2.0
ERROR: Loading book failed: Failed to open the book at C:\Users\user\Documents\Library\Temporal Knight\Mutant Deviations (9651)\Mutant Deviations - Temporal Knight.epub. Click "Show details" for more info.

Traceback (most recent call last):
  File "C:\Users\user\Desktop\nook\calibre\src\calibre\gui2\viewer\ui.py", line 328, in _load_ebook_worker
  File "C:\Users\user\Desktop\nook\calibre\src\calibre\gui2\viewer\convert_book.py", line 182, in prepare_book
  File "C:\Users\user\Desktop\nook\calibre\src\calibre\gui2\viewer\convert_book.py", line 144, in do_convert
ConversionFailure: Failed to convert book: C:\Users\user\Documents\Library\Temporal Knight\Mutant Deviations (9651)\Mutant Deviations - Temporal Knight.epub with error:
InputFormatPlugin: EPUB Input running
on C:\Users\user\Documents\Library\Temporal Knight\Mutant Deviations (9651)\Mutant Deviations - Temporal Knight.epub
Failed to run pipe worker with command: from calibre.srv.render_book import viewer_main; viewer_main()
P

(Yes, it includes a single 'P' at the end.)

Debug mode doesn't show any additional output.

So am I doing something dumb or is anyone else seeing this?

theducks · 10-31-2019, 12:05 PM

FWIW Someone else posted a couple of logs with that single P

jhowell · 10-31-2019, 12:09 PM

Quote:

Originally Posted by theducks

FWIW Someone else posted a couple of logs with that single P

Kovid’s response has been:

Quote:

Originally Posted by kovidgoyal

something is likely interfering with the calibre worker process. Try running in safe mode.

kovidgoyal · 10-31-2019, 12:46 PM

Try running just the render worker like this:

calibre-debug src/calibre/srv/render_book.py file.epub

that will hopefully give you more details on what the error is.

JimmXinu · 10-31-2019, 01:04 PM

Spoiler output:

Spoiler:

Code:

InputFormatPlugin: EPUB Input running
on C:\Users\user\Desktop\nook\calibre\Mutant Deviations - Temporal Knight.epub
         113703 function calls (107793 primitive calls) in 0.306 seconds

   Ordered by: cumulative time
   List reduced from 735 to 37 due to restriction <0.05>

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
        1    0.000    0.000    0.306    0.306 C:\Users\user\Desktop\nook\calibre\src\calibre\srv\render_book.py:857(render)
        1    0.000    0.000    0.211    0.211 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\oeb\iterator\book.py:50(extract_book)
        1    0.000    0.000    0.209    0.209 C:\Users\user\Desktop\nook\calibre\src\calibre\customize\conversion.py:231(__call__)
        1    0.008    0.008    0.208    0.208 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\conversion\plugins\epub_input.py:256(convert)
        1    0.000    0.000    0.167    0.167 C:\Users\user\Desktop\nook\calibre\src\calibre\utils\zipfile.py:1088(extractall)
       26    0.000    0.000    0.167    0.006 C:\Users\user\Desktop\nook\calibre\src\calibre\utils\zipfile.py:1074(extract)
       26    0.139    0.005    0.167    0.006 C:\Users\user\Desktop\nook\calibre\src\calibre\utils\zipfile.py:1104(_extract_member)
        1    0.000    0.000    0.061    0.061 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\metadata\meta.py:73(get_metadata)
        1    0.000    0.000    0.061    0.061 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\metadata\meta.py:86(_get_metadata)
        1    0.000    0.000    0.056    0.056 C:\Users\user\Desktop\nook\calibre\src\calibre\customize\ui.py:416(get_file_type_metadata)
        1    0.002    0.002    0.056    0.056 C:\Users\user\Desktop\nook\calibre\src\calibre\customize\builtins.py:191(get_metadata)
        1    0.000    0.000    0.051    0.051 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\metadata\epub.py:239(get_quick_metadata)
        1    0.000    0.000    0.051    0.051 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\metadata\epub.py:216(get_metadata)
        1    0.000    0.000    0.050    0.050 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\metadata\opf.py:40(get_metadata)
        5    0.000    0.000    0.040    0.008 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\chardet.py:169(xml_to_unicode)
      484    0.010    0.000    0.038    0.000 {method 'sub' of '_sre.SRE_Pattern' objects}
        1    0.000    0.000    0.033    0.033 C:\Users\user\Desktop\nook\calibre\src\calibre\srv\render_book.py:567(process_exploded_book)
        4    0.000    0.000    0.033    0.008 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\chardet.py:100(substitute_entites)
        2    0.001    0.000    0.032    0.016 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\metadata\utils.py:39(parse_opf)
        2    0.003    0.002    0.030    0.015 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\metadata\opf2.py:583(__init__)
        1    0.000    0.000    0.029    0.029 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\metadata\opf.py:34(get_metadata_from_parsed)
        1    0.000    0.000    0.029    0.029 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\metadata\opf.py:25(get_metadata2)
     3987    0.025    0.000    0.028    0.000 C:\Users\user\Desktop\nook\calibre\src\calibre\__init__.py:524(entity_to_unicode)
        2    0.000    0.000    0.025    0.012 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\metadata\book\base.py:471(smart_update)
        5    0.000    0.000    0.023    0.005 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\metadata\__init__.py:346(MetaInformation)
        7    0.001    0.000    0.022    0.003 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\metadata\book\base.py:81(__init__)
        1    0.000    0.000    0.022    0.022 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\metadata\opf2.py:643(to_book_metadata)
       54    0.000    0.000    0.019    0.000 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\metadata\book\base.py:476(copy_not_none)
        1    0.000    0.000    0.017    0.017 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\oeb\polish\container.py:256(__init__)
  786/677    0.000    0.000    0.015    0.000 {getattr}
        1    0.000    0.000    0.013    0.013 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\oeb\polish\container.py:295(refresh_mime_map)
       20    0.000    0.000    0.011    0.001 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\oeb\polish\container.py:610(parsed)
        3    0.000    0.000    0.011    0.004 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\oeb\polish\container.py:586(parse)
       15    0.001    0.000    0.011    0.001 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\oeb\polish\container.py:540(opf_xpath)
       26    0.000    0.000    0.010    0.000 shutil.py:60(copyfileobj)
        2    0.001    0.000    0.010    0.005 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\oeb\polish\container.py:200(parse_xml)
       15    0.000    0.000    0.010    0.001 C:\Users\user\Desktop\nook\calibre\src\calibre\ebooks\oeb\polish\container.py:634(opf)


P^@y^@t^@h^@o^@n^@ ^@f^@u^@n^@c^@t^@i^@o^@n^@ ^@t^@e^@r^@m^@i^@n^@a^@t^@e^@d^@ ^@u^@n^@e^@x^@p^@e^@c^@t^@e^@d^@l^@y^@
^@
^@ ^@ ^@'^@N^@o^@n^@e^@T^@y^@p^@e^@'^@ ^@o^@b^@j^@e^@c^@t^@ ^@h^@a^@s^@ ^@n^@o^@ ^@a^@t^@t^@r^@i^@b^@u^@t^@e^@ ^@'^@s^@e^@r^@i^@a^@l^@i^@z^@e^@'^@ ^@(^@E^@r^@r^@o^@r^@ ^@C^@o^@d^@e^@:^@ ^@1^@)^@
^@
^@Traceback (most recent call last):
  File "site.py", line 114, in main
  File "site.py", line 88, in run_entry_point
  File "C:\Users\user\Desktop\nook\calibre\src\calibre\debug.py", line 348, in main
    run_script(args[1], args[2:])
  File "C:\Users\user\Desktop\nook\calibre\src\calibre\debug.py", line 260, in run_script
    exec_path(ef, g)
  File "C:\Users\user\Desktop\nook\calibre\src\calibre\srv\render_book.py", line 932, in <module>
    profile()
  File "C:\Users\user\Desktop\nook\calibre\src\calibre\srv\render_book.py", line 927, in profile
    extract_annotations=True, virtualize_resources=False, max_workers=1
  File "C:\Users\user\Desktop\nook\calibre\src\calibre\srv\render_book.py", line 869, in render
    book_metadata=mi, virtualize_resources=virtualize_resources
  File "C:\Users\user\Desktop\nook\calibre\src\calibre\srv\render_book.py", line 637, in process_exploded_book
    ), container
  File "C:\Users\user\Desktop\nook\calibre\src\calibre\srv\render_book.py", line 476, in __call__
    return [process_book_files(names, *args, container=in_process_container)]
  File "C:\Users\user\Desktop\nook\calibre\src\calibre\srv\render_book.py", line 559, in process_book_files
    transform_html(container, name, virtualize_resources, link_uid, link_to_map, virtualized_names)
  File "C:\Users\user\Desktop\nook\calibre\src\calibre\srv\render_book.py", line 416, in transform_html
    shtml = html_as_json(root)
  File "C:\Users\user\Desktop\nook\calibre\src\calibre\srv\render_book.py", line 763, in html_as_json
    serialize = plugins['html_as_json'][0].serialize
AttributeError: 'NoneType' object has no attribute 'serialize'

I've replaced the character '^@' (AKA \0, or NULL) in the output with the string "^@" so it's visible. That's the source of the single P, I bet.

For legibility, the string without NULLs is: "Python function terminated unexpectedly 'NoneType' object has no attribute 'serialize' (Error Code: 1)"

kovidgoyal · 10-31-2019, 01:15 PM

that should take care of it, the prepare book process has been greatly speeded up, but you need a native code module for it which you wont get till calibre 4.3 is released https://github.com/kovidgoyal/calibr...a71e4cad2d38b2

JimmXinu · 10-31-2019, 01:22 PM

Confirmed--I'm not getting that error now. Thanks!

And thanks for the upcoming pre-process speed up, that's great news!

jhowell · 10-31-2019, 02:06 PM

Is is possible to also fix Python exception error messages so that they do not contains null characters?

I am seeing these whenever any of the calibre command line programs errors out.

kovidgoyal · 11-01-2019, 01:20 AM

Quote:

Originally Posted by jhowell

Is is possible to also fix Python exception error messages so that they do not contains null characters?

I am seeing these whenever any of the calibre command line programs errors out.

yeah its a windows specific thing, need to look into it when I am next on a windows machine.

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10-31-2019, 12:05 PM	#2
theducks Well trained by Cats Posts: 29,809 Karma: 54830978 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	FWIW Someone else posted a couple of logs with that single P

10-31-2019, 12:46 PM	#4
kovidgoyal creator of calibre Posts: 43,860 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Try running just the render worker like this: calibre-debug src/calibre/srv/render_book.py file.epub that will hopefully give you more details on what the error is.

10-31-2019, 01:15 PM	#6
kovidgoyal creator of calibre Posts: 43,860 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	that should take care of it, the prepare book process has been greatly speeded up, but you need a native code module for it which you wont get till calibre 4.3 is released https://github.com/kovidgoyal/calibr...a71e4cad2d38b2

10-31-2019, 01:22 PM	#7
JimmXinu Plugin Developer Posts: 6,329 Karma: 3966249 Join Date: Dec 2011 Location: Midwest USA Device: Kindle Paperwhite(10th)	Confirmed--I'm not getting that error now. Thanks! And thanks for the upcoming pre-process speed up, that's great news!

10-31-2019, 02:06 PM	#8
jhowell Grand Sorcerer Posts: 6,498 Karma: 84420419 Join Date: Nov 2011 Location: Tampa Bay, Florida Device: Kindles	Is is possible to also fix Python exception error messages so that they do not contains null characters? I am seeing these whenever any of the calibre command line programs errors out.