Blastprotein: List index out of range if there are no results

[Zach Pearson]

The following bug report has been submitted:
Platform:        Linux-5.10.43.3-microsoft-standard-WSL2-x86_64-with-glibc2.31
ChimeraX Version: 1.3.dev202109100425 (2021-09-10 04:25:07 UTC)
Description
When there are no results to show, we hit an index error. 

Log:
UCSF ChimeraX version: 1.3.dev202109100425 (2021-09-10)  
© 2016-2021 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> open 5y5s format mmcif fromDatabase pdb

5y5s title:  
Structure of photosynthetic LH1-RC super-complex at 1.9 angstrom resolution
[more info...]  
  
Chain information for 5y5s #1  
---  
Chain | Description | UniProt  
0 2 4 6 8 B E G J N P R T V X Z | LH1 β polypeptide | D2Z0P1_THETI  
1 3 5 7 9 A D F I K O Q S U W Y | LH1 α polypeptide | D2Z0P2_THETI  
C | Photosynthetic reaction center cytochrome c subunit | CYCR_THETI  
H | Photosynthetic reaction center H subunit | D2Z0P9_THETI  
L | Photosynthetic reaction center L subunit | D2Z0P3_THETI  
M | Photosynthetic reaction center M subunit | A8ASG6_THETI  
  
Non-standard residues in 5y5s #1  
---  
BCL — bacteriochlorophyll A  
BPH — bacteriopheophytin A  
CA — calcium ion  
CDL — cardiolipin (diphosphatidyl glycerol; bis-(1,2-diacyl-Sn-
glycero-3-phospho)-1',3'-Sn-glycerol)  
CRT — spirilloxanthin (rhodoviolascin)  
FE — Fe (III) ion  
GOL — glycerol (glycerin; propane-1,2,3-triol)  
HEC — heme C  
LDA — lauryl dimethylamine-N-oxide  
LHG — 1,2-dipalmitoyl-phosphatidyl-glycerole  
LMT — dodecyl-β-D-maltoside  
MG — magnesium ion  
MQ8 — menaquinone 8 (2-methyl-3-(3,7,11,15,19,23,27,31-octamethyl-
dotriaconta-2,6,10,14,18,22,26,30-octaenyl)-[1,4]napthoquinone)  
PEF — di-palmitoyl-3-Sn-phosphatidylethanolamine
(3-[aminoethylphosphoryl]-[1,2-di-palmitoyl]-Sn-glycerol)  
PGV —
(1R)-2-{[{[(2S)-2,3-dihydroxypropyl]oxy}(hydroxy)phosphoryl]oxy}-1-[(palmitoyloxy)methyl]ethyl
(11E)-octadec-11-enoate (phosphatidylglycerol, 2-vaccenoyl-1-palmitoyl-Sn-
glycerol-3-phosphoglycerol)  
SO4 — sulfate ion  
UNL — unknown ligand  
UQ8 — Ubiquinone-8
(2,3-dimethoxy-5-methyl-6-[(6E,10E,14E,18E,22E,26E)-3,7,11,15,19,23,27,31-octamethyldotriaconta-2,6,10,14,18,22,26,30-octaen-1-yl]cyclohexa-2,5-diene-1,4-dione)  
  

> ui tool show "blast protein"

> blastprotein /V database alphafold cutoff 1e-3 matrix BLOSUM45 maxSeqs 100
> name bp1

ChimeraX REST job id: job_330bc2nj  
BlastProtein finished.  
Parsing BLAST results.  
Traceback (most recent call last):  
File "/home/zjp/git/ChimeraX/ChimeraX.app/lib/python3.9/site-
packages/chimerax/blastprotein/results.py", line 158, in
_on_report_hits_signal  
columns = list(items[0].keys())[::-1]  
IndexError: list index out of range  
  
IndexError: list index out of range  
  
File "/home/zjp/git/ChimeraX/ChimeraX.app/lib/python3.9/site-
packages/chimerax/blastprotein/results.py", line 158, in
_on_report_hits_signal  
columns = list(items[0].keys())[::-1]  
  
See log for complete Python traceback.  
  




OpenGL version: 4.5 (Core Profile) Mesa 21.0.3
OpenGL renderer: llvmpipe (LLVM 12.0.0, 256 bits)
OpenGL vendor: Mesa/X.org
Manufacturer: unknown
Model: unknown
OS: Ubuntu 20.04 focal
Architecture: 64bit ELF
Virutal Machine: wsl
CPU: 20 Intel(R) Core(TM) i9-10850K CPU @ 3.60GHz
Cache Size: 20480 KB
Memory:
	              total        used        free      shared  buff/cache   available
	Mem:           15Gi       797Mi       7.7Gi        60Mi       7.1Gi        14Gi
	Swap:         4.0Gi       1.0Mi       4.0Gi

Graphics:
	unknown
Locale: ('en_US', 'UTF-8')
PyQt5 5.15.2, Qt 5.15.2
Installed Packages:
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[Zach Pearson]

Should be fixed by ​this commit.