Driver expressions that use functions injected by an addon no longer work. #62280

New Issue

Anton M · 2019-03-06T19:55:42+01:00

Anton M commented

2019-03-06 19:55:42 +01:00

System Information
Operating system: Linux

Blender Version
Broken: 2.80, 18e5540a48 (2019-03-06)
Worked: 2.80 from a few days ago

Short description of error
Loading a .blend file that contains drivers that use functions injected by an addon results in python exceptions and driver expressions not being correctly evaluated. Here's an example of one such exception:

Error in Driver: The following Python expression failed:
        'mul5(3)'

Traceback (most recent call last):
  File "<bpy driver>", line 1, in <module>
NameError: name 'mul5' is not defined

Exact steps for others to reproduce the error

Install attached test_module.py addon.
Enable it in blender.
While the addon is ON, open test.blend.
What you'll see: an empty screen. What's expected: a stretched cube on X and Y axes.

test.blend
test_module.py

**System Information** Operating system: Linux **Blender Version** Broken: 2.80, 18e5540a48b6 (2019-03-06) Worked: 2.80 from a few days ago **Short description of error** Loading a .blend file that contains drivers that use functions injected by an addon results in python exceptions and driver expressions not being correctly evaluated. Here's an example of one such exception: ``` Error in Driver: The following Python expression failed: 'mul5(3)' Traceback (most recent call last): File "<bpy driver>", line 1, in <module> NameError: name 'mul5' is not defined ``` **Exact steps for others to reproduce the error** 1. Install attached test_module.py addon. 2. Enable it in blender. 3. While the addon is ON, open test.blend. 4. What you'll see: an empty screen. What's expected: a stretched cube on X and Y axes. [test.blend](https://archive.blender.org/developer/F6774270/test.blend) [test_module.py](https://archive.blender.org/developer/F6774271/test_module.py)

Anton M commented

2019-03-06 19:55:42 +01:00

Added subscriber: @peerz

Anton M commented

2019-03-06 21:21:48 +01:00

Reverting d31b2f8549 fixes the problem.

Reverting d31b2f854954838fb849b5b0be0011d792eecb43 fixes the problem.

takeshi funahashi commented

2019-03-07 07:36:25 +01:00

Added subscriber: @TakeshiFunahashi

takeshi funahashi commented

2019-03-07 07:36:25 +01:00

I could see same problem. All scene which I saved with 2.8 armature which use driver expressions as function (generated by add on)
corrupted.

To correct it, I must need to up-date dependencies about all driver.

About attached file, it is same. If I up-date dependencies, now it show correctly.

I could see same problem. All scene which I saved with 2.8 armature which use driver expressions as function (generated by add on) corrupted. To correct it, I must need to up-date dependencies about all driver. About attached file, it is same. If I up-date dependencies, now it show correctly.

Brecht Van Lommel was assigned by Jacques Lucke

2019-03-07 10:41:30 +01:00

blender-admin commented

2019-03-07 11:40:02 +01:00

This issue was referenced by e25cdac24b

This issue was referenced by e25cdac24bc48cbb0f05f42b52e42adaaae63499

Brecht Van Lommel commented

2019-03-07 11:56:18 +01:00

Changed status from 'Open' to: 'Resolved'

Brecht Van Lommel closed this issue

2019-03-07 11:56:18 +01:00

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Driver expressions that use functions injected by an addon no longer work. #62280