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Python 3: new.instancemethod is no more #8658

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josephsl opened this Issue Aug 22, 2018 · 3 comments

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4 participants
@josephsl
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commented Aug 22, 2018

Hi,

Discovered while trying to figure out why speech synthesizers were not loading in python 3 port: new.instancemethod is gone.

Steps to reproduce:

  1. Run Python 2.7 and 3.7 interpreters.
  2. Type "import new".

Actual behavior:

Python 3 raises "ModuleNotFoundError".

Expected behavior:"New" module or its closest replqcement (currently types) should be loaded in Python 3.

System configuration:

NVDA Installed/portable/running from source:

Not applicable

NVDA version:

N/A

Windows version:

Windows 10 Version 1803

Name and version of other software in use when reproducing the issue:

Python 2.7, 3.7

Other information about your system:

N/A

Other questions:

Does the issue still occur after restarting your PC?

Not applicable

Have you tried any other versions of NVDA?

N/A

Impact:

This may impact object creation and related facilities, a fundamental blocking bug for Python 3 transition. Google searches says use types.instancemethod, or in Python 3, new.instancemethod is not needed.

Thanks.

@josephsl josephsl added the Python 3 label Aug 22, 2018

@larry801

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commented Aug 22, 2018

Is types.MethodType proper for this?

@leonardder

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commented Aug 22, 2018

a simple grep of instancemethod in the git repository turns out that instancemethod is only imported in the NVDAObjects module (init.py), but it is unused.

@josephsl

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commented Aug 22, 2018

@leonardder leonardder added this to To do in Update NVDA to Python 3 via automation Dec 11, 2018

Update NVDA to Python 3 automation moved this from To do to Done Dec 13, 2018

@nvaccessAuto nvaccessAuto added this to the 2018.4 milestone Dec 13, 2018

feerrenrut added a commit that referenced this issue Dec 13, 2018

AutoPropertyObject: support abstract and class properties (PR #8393)
Closes #8294
Fixes #8652
Closes #8658

Properties and methods within classes can now be marked as abstract in NVDA. These classes will raise an error if instantiated.
See PR #8393 for full description.
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