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Old 03-03-2020, 09:42 PM   #16
davidfor
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Originally Posted by BetterRed View Post
No that's another bug in the code, but it's not obvious to me what it is.

What options did you check in Modify - did you check Deindent? if so try unchecking it and we might dodge that bullet for now

BTW all the plugins you can install from Preferences plugins originate from here.

BR
It's another tab/spaces problem. I don't remember seeing "_load_backward_compatible" in the stack dump before, so maybe Kovid has tightened something up. In any case, the attached version should be OK. There were some tabs used for indentation in other places as well, so I have removed them.
Last edited by BetterRed; 03-12-2020 at 01:16 AM. Reason: Remove attachment - it'll turn up in the plugin thread shortly
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Old 03-04-2020, 01:07 AM   #17
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Thanks David

Not sure I understand which tab caused the problem at 532, not that that matters. I did notice tabs and 4 spaces were intermingled throughout that module, which looked rather 'unpretty' to me. But I'm loathe to meddle too much with python code because of its layout rules.

What I can't understand is why it has taken so long for these problems to show up, they must have been there since version 1.4 was released on Oct 19 last year… at least.

BR
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Old 03-04-2020, 02:30 AM   #18
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Originally Posted by BetterRed View Post
Not sure I understand which tab caused the problem at 532, not that that matters. I did notice tabs and 4 spaces were intermingled throughout that module, which looked rather 'unpretty' to me. But I'm loathe to meddle too much with python code because of its layout rules.

What I can't understand is why it has taken so long for these problems to show up, they must have been there since version 1.4 was released on Oct 19 last year… at least.
Looking at the errors, it is using Python from the machine, not calibre. And that is Python 3.7. The error is when the code is compiled by Python. And a search found:

Code:
Python 3 disallows mixing the use of tabs and spaces for indentation.
And these failures are on the first line in the file where the indentation type changed. So, it is the change from Python 2 to Python 3 that is causing the problems. And that it is working in Python 2 is probably a bit lucky. The tab/space usage is consistent in blocks, but, it wouldn't surprise me if there are some lines being execute when they shouldn't.
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Old 03-04-2020, 02:43 AM   #19
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Ah I wondered about that. Initially I thought he might be running 4.99.?. IIRC at least one of the Linux distros jumped the gun and put it into their repo.

Presumably if he installs from the calibre site he'll be using the python Kovid ships.

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Old 03-11-2020, 11:12 PM   #20
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Originally Posted by davidfor View Post
It's another tab/spaces problem. I don't remember seeing "_load_backward_compatible" in the stack dump before, so maybe Kovid has tightened something up. In any case, the attached version should be OK. There were some tabs used for indentation in other places as well, so I have removed them.
If the change of tabs to spaces is the only change in this version, I would not object (would welcome, actually) if you and/or BR would bump the version number accordingly, toss a quick bugfix note into the changelog, and make it an official update.
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Old 03-12-2020, 01:14 AM   #21
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If the change of tabs to spaces is the only change in this version, I would not object (would welcome, actually) if you and/or BR would bump the version number accordingly, toss a quick bugfix note into the changelog, and make it an official update.
I've grabbed and deleted the zip from here, I'll put what is now to 1.4.1 into the Modify plugin thread - momentarily

BR
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