cannot import name 'RibbonDrawing' from 'chimerax.atomic.ribbon'

[chimerax-bug-report@…]

The following bug report has been submitted:
Platform:        Darwin-18.0.0-x86_64-i386-64bit
ChimeraX Version: 0.94 (2020-04-09)
Description
(Describe the actions that caused this problem to occur here)

Log:
UCSF ChimeraX version: 0.94 (2020-04-09)  
© 2016-2020 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> open 6tap

6tap title:  
Structure of the dArc1 capsid [more info...]  
  
Chain information for 6tap #1  
---  
Chain | Description  
A B C D E | Activity-regulated cytoskeleton associated protein 1  
  
Non-standard residues in 6tap #1  
---  
ZN — zinc ion  
  
6tap mmCIF Assemblies  
---  
1| author_defined_assembly  
  
  

> sequence chain #1/A#1/B#1/C#1/D#1/E

Alignment identifier is 1  

> sym #1 assembly 1

> view

Traceback (most recent call last):  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/ui/gui.py", line 601, in customEvent  
func(*args, **kw)  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/ui/widgets/htmlview.py", line 429, in defer  
cxcmd(session, topic)  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/ui/widgets/htmlview.py", line 445, in cxcmd  
run(session, cmd)  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/core/commands/run.py", line 31, in run  
results = command.run(text, log=log)  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/core/commands/cli.py", line 2848, in run  
result = ci.function(session, **kw_args)  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/std_commands/view.py", line 50, in view  
undo = UndoView("view", session, models)  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/std_commands/view.py", line 522, in __init__  
self._before = NamedView(v, v.center_of_rotation, models)  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/graphics/view.py", line 654, in _get_cofr  
cofr = self._compute_center_of_rotation()  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/graphics/view.py", line 681, in _compute_center_of_rotation  
p = self._front_center_cofr()  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/graphics/view.py", line 749, in _front_center_cofr  
cr = self._front_center_point() # Can be None  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/graphics/view.py", line 759, in _front_center_point  
exclude=lambda d: hasattr(d, 'no_cofr') and d.no_cofr)  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/graphics/view.py", line 774, in first_intercept  
p = self.first_intercept_on_segment(xyz1, xyz2, exclude=exclude,
beyond=beyond)  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/graphics/view.py", line 788, in first_intercept_on_segment  
p = self.drawing.first_intercept(xyz1, xyz2, exclude=exclude)  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/graphics/drawing.py", line 986, in first_intercept  
p = self.first_intercept_children(self.child_drawings(), mxyz1, mxyz2,
exclude=exclude)  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/graphics/drawing.py", line 1002, in first_intercept_children  
p = d.first_intercept(cxyz1, cxyz2, exclude=exclude)  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/atomic/structure.py", line 580, in first_intercept  
b = self._pick_bounds()  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/atomic/structure.py", line 604, in _pick_bounds  
from .ribbon import RibbonDrawing  
ImportError: cannot import name 'RibbonDrawing' from 'chimerax.atomic.ribbon'
(/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/atomic/ribbon.py)  
  
ImportError: cannot import name 'RibbonDrawing' from 'chimerax.atomic.ribbon'
(/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/atomic/ribbon.py)  
  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/atomic/structure.py", line 604, in _pick_bounds  
from .ribbon import RibbonDrawing  
  
See log for complete Python traceback.  
  




OpenGL version: 4.1 ATI-2.0.36
OpenGL renderer: AMD Radeon Pro 555 OpenGL Engine
OpenGL vendor: ATI Technologies Inc.

[Tom Goddard]

Fixed 4 weeks ago.