Boolean attribute test produces traceback

[pett]

The following bug report has been submitted:
Platform:        macOS-10.15.7-x86_64-i386-64bit
ChimeraX Version: 1.3.dev202108092350 (2021-08-09 23:50:39 UTC)
Description
testing attribute against boolean

Log:
Traceback (most recent call last):  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/cmd_line/tool.py", line 298, in execute  
cmd.run(cmd_text)  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/core/commands/cli.py", line 2812, in run  
prev_annos = self._process_positional_arguments()  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/core/commands/cli.py", line 2588, in
_process_positional_arguments  
value, text = self._parse_arg(anno, text, session, False)  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/core/commands/cli.py", line 2447, in _parse_arg  
value, replacement, rest = annotation.parse(text, session)  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/core/commands/cli.py", line 1275, in parse  
objects = aspec.evaluate(session)  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/core/commands/atomspec.py", line 1069, in evaluate  
results = self._left_spec.evaluate(  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/core/commands/atomspec.py", line 979, in evaluate  
return self.find_matches(session, models, results, ordered,
add_implied=add_implied)  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/core/commands/atomspec.py", line 982, in find_matches  
self._specifier.find_matches(session, models, results, ordered,
add_implied=add_implied)  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/core/commands/atomspec.py", line 445, in find_matches  
model_spec.find_matches(session, model_list, results, ordered,
add_implied=add_implied)  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/core/commands/atomspec.py", line 607, in find_matches  
_add_model_parts(session, model, self.sub_parts, results, ordered)  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/core/commands/atomspec.py", line 627, in _add_model_parts  
chain_spec.find_selected_parts(model, atoms, num_atoms, my_results)  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/core/commands/atomspec.py", line 562, in find_selected_parts  
subpart.find_selected_parts(model, atoms, num_atoms, sub_results)  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/core/commands/atomspec.py", line 551, in find_selected_parts  
atoms = self._filter_parts(model, atoms, num_atoms)  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/core/commands/atomspec.py", line 569, in _filter_parts  
mask = model.atomspec_filter(self.Symbol, atoms, num_atoms,  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/atomic/structure.py", line 845, in atomspec_filter  
return self._atomspec_filter_residue(atoms, num_atoms, parts, attrs)  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/atomic/structure.py", line 911, in _atomspec_filter_residue  
selected = self._atomspec_attr_filter(atoms.residues, selected, attrs)  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/atomic/structure.py", line 882, in _atomspec_attr_filter  
selected = [(selected[i] and choose(obj)) for i, obj in enumerate(objects)]  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/atomic/structure.py", line 882, in <listcomp>  
selected = [(selected[i] and choose(obj)) for i, obj in enumerate(objects)]  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/core/commands/atomspec.py", line 885, in matcher  
v = v.lower()  
AttributeError: 'bool' object has no attribute 'lower'  
  
AttributeError: 'bool' object has no attribute 'lower'  
  
File
"/Users/pett/src/chimerax/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-
packages/chimerax/core/commands/atomspec.py", line 885, in matcher  
v = v.lower()  
  
See log for complete Python traceback.  
  




OpenGL version: 4.1 INTEL-14.7.18
OpenGL renderer: Intel(R) Iris(TM) Pro Graphics 6200
OpenGL vendor: Intel Inc.Hardware:

    Hardware Overview:

      Model Name: iMac
      Model Identifier: iMac16,2
      Processor Name: Quad-Core Intel Core i5
      Processor Speed: 2.8 GHz
      Number of Processors: 1
      Total Number of Cores: 4
      L2 Cache (per Core): 256 KB
      L3 Cache: 4 MB
      Memory: 16 GB
      Boot ROM Version: 427.140.8.0.0
      SMC Version (system): 2.32f21

Software:

    System Software Overview:

      System Version: macOS 10.15.7 (19H1323)
      Kernel Version: Darwin 19.6.0
      Time since boot: 9:41

Graphics/Displays:

    Intel Iris Pro Graphics 6200:

      Chipset Model: Intel Iris Pro Graphics 6200
      Type: GPU
      Bus: Built-In
      VRAM (Dynamic, Max): 1536 MB
      Vendor: Intel
      Device ID: 0x1622
      Revision ID: 0x000a
      Metal: Supported, feature set macOS GPUFamily1 v4
      Displays:
        iMac:
          Display Type: LCD
          Resolution: 1920 x 1080 (1080p FHD - Full High Definition)
          UI Looks like: 1920 x 1080
          Framebuffer Depth: 24-Bit Color (ARGB8888)
          Main Display: Yes
          Mirror: Off
          Online: Yes
          Automatically Adjust Brightness: No
          Connection Type: Internal

Locale: ('en_US', 'UTF-8')
PyQt5 5.15.2, Qt 5.15.2
Installed Packages:
    alabaster: 0.7.12
    appdirs: 1.4.4
    appnope: 0.1.2
    Babel: 2.9.1
    backcall: 0.2.0
    blockdiag: 2.0.1
    certifi: 2021.5.30
    cftime: 1.5.0
    chardet: 4.0.0
    charset-normalizer: 2.0.3
    ChimeraX-AddCharge: 1.1.4
    ChimeraX-AddH: 2.1.10
    ChimeraX-AlignmentAlgorithms: 2.0
    ChimeraX-AlignmentHdrs: 3.2
    ChimeraX-AlignmentMatrices: 2.0
    ChimeraX-Alignments: 2.2
    ChimeraX-AlphaFold: 1.0
    ChimeraX-AltlocExplorer: 1.0
    ChimeraX-AmberInfo: 1.0
    ChimeraX-Arrays: 1.0
    ChimeraX-Atomic: 1.28.1
    ChimeraX-AtomicLibrary: 4.1.2
    ChimeraX-AtomSearch: 2.0
    ChimeraX-AtomSearchLibrary: 1.0
    ChimeraX-AxesPlanes: 2.0
    ChimeraX-BasicActions: 1.1
    ChimeraX-BILD: 1.0
    ChimeraX-BlastProtein: 1.1.1
    ChimeraX-BondRot: 2.0
    ChimeraX-BugReporter: 1.0
    ChimeraX-BuildStructure: 2.5.3
    ChimeraX-Bumps: 1.0
    ChimeraX-BundleBuilder: 1.1
    ChimeraX-ButtonPanel: 1.0
    ChimeraX-CageBuilder: 1.0
    ChimeraX-CellPack: 1.0
    ChimeraX-Centroids: 1.1
    ChimeraX-ChemGroup: 2.0
    ChimeraX-Clashes: 2.1
    ChimeraX-ColorActions: 1.0
    ChimeraX-ColorGlobe: 1.0
    ChimeraX-ColorKey: 1.3.4
    ChimeraX-CommandLine: 1.1.4
    ChimeraX-ConnectStructure: 2.0
    ChimeraX-Contacts: 1.0
    ChimeraX-Core: 1.3.dev202108092350
    ChimeraX-CoreFormats: 1.1
    ChimeraX-coulombic: 1.3
    ChimeraX-Crosslinks: 1.0
    ChimeraX-Crystal: 1.0
    ChimeraX-CrystalContacts: 1.0
    ChimeraX-DataFormats: 1.2
    ChimeraX-Dicom: 1.0
    ChimeraX-DistMonitor: 1.1.4
    ChimeraX-DistUI: 1.0
    ChimeraX-Dssp: 2.0
    ChimeraX-EMDB-SFF: 1.0
    ChimeraX-ExperimentalCommands: 1.0
    ChimeraX-FileHistory: 1.0
    ChimeraX-FunctionKey: 1.0
    ChimeraX-GaudiViewX: 1.0
    ChimeraX-Geometry: 1.1
    ChimeraX-gltf: 1.0
    ChimeraX-Graphics: 1.1
    ChimeraX-Hbonds: 2.1.1
    ChimeraX-Help: 1.2
    ChimeraX-HKCage: 1.3
    ChimeraX-IHM: 1.1
    ChimeraX-ImageFormats: 1.2
    ChimeraX-IMOD: 1.0
    ChimeraX-IO: 1.0.1
    ChimeraX-ItemsInspection: 1.0
    ChimeraX-Label: 1.1
    ChimeraX-ListInfo: 1.1.1
    ChimeraX-Log: 1.1.4
    ChimeraX-LookingGlass: 1.1
    ChimeraX-Maestro: 1.8.1
    ChimeraX-Map: 1.1
    ChimeraX-MapData: 2.0
    ChimeraX-MapEraser: 1.0
    ChimeraX-MapFilter: 2.0
    ChimeraX-MapFit: 2.0
    ChimeraX-MapSeries: 2.1
    ChimeraX-Markers: 1.0
    ChimeraX-Mask: 1.0
    ChimeraX-MatchMaker: 2.0
    ChimeraX-MDcrds: 2.4
    ChimeraX-MedicalToolbar: 1.0.1
    ChimeraX-Meeting: 1.0
    ChimeraX-MLP: 1.1
    ChimeraX-mmCIF: 2.3
    ChimeraX-MMTF: 2.1
    ChimeraX-Modeller: 1.1
    ChimeraX-ModelPanel: 1.1
    ChimeraX-ModelSeries: 1.0
    ChimeraX-Mol2: 2.0
    ChimeraX-Morph: 1.0
    ChimeraX-MouseModes: 1.1
    ChimeraX-Movie: 1.0
    ChimeraX-Neuron: 1.0
    ChimeraX-Nucleotides: 2.0.2
    ChimeraX-OpenCommand: 1.7
    ChimeraX-PDB: 2.6
    ChimeraX-PDBBio: 1.0
    ChimeraX-PDBLibrary: 1.0.1
    ChimeraX-PDBMatrices: 1.0
    ChimeraX-PickBlobs: 1.0
    ChimeraX-Positions: 1.0
    ChimeraX-PresetMgr: 1.0.1
    ChimeraX-PubChem: 2.1
    ChimeraX-ReadPbonds: 1.0
    ChimeraX-Registration: 1.1
    ChimeraX-RemoteControl: 1.0
    ChimeraX-RenderByAttr: 1.0
    ChimeraX-ResidueFit: 1.0
    ChimeraX-RestServer: 1.1
    ChimeraX-RNALayout: 1.0
    ChimeraX-RotamerLibMgr: 2.0
    ChimeraX-RotamerLibsDunbrack: 2.0
    ChimeraX-RotamerLibsDynameomics: 2.0
    ChimeraX-RotamerLibsRichardson: 2.0
    ChimeraX-SaveCommand: 1.5
    ChimeraX-SchemeMgr: 1.0
    ChimeraX-SDF: 2.0
    ChimeraX-Segger: 1.0
    ChimeraX-Segment: 1.0
    ChimeraX-SelInspector: 1.0
    ChimeraX-SeqView: 2.4.1
    ChimeraX-Shape: 1.0.1
    ChimeraX-Shell: 1.0
    ChimeraX-Shortcuts: 1.1
    ChimeraX-ShowAttr: 1.0
    ChimeraX-ShowSequences: 1.0
    ChimeraX-SideView: 1.0
    ChimeraX-Smiles: 2.1
    ChimeraX-SmoothLines: 1.0
    ChimeraX-SpaceNavigator: 1.0
    ChimeraX-StdCommands: 1.6
    ChimeraX-STL: 1.0
    ChimeraX-Storm: 1.0
    ChimeraX-Struts: 1.0
    ChimeraX-Surface: 1.0
    ChimeraX-SwapAA: 2.0
    ChimeraX-SwapRes: 2.1
    ChimeraX-TapeMeasure: 1.0
    ChimeraX-Test: 1.0
    ChimeraX-Toolbar: 1.1
    ChimeraX-ToolshedUtils: 1.2
    ChimeraX-Tug: 1.0
    ChimeraX-UI: 1.11
    ChimeraX-uniprot: 2.2
    ChimeraX-UnitCell: 1.0
    ChimeraX-ViewDockX: 1.0.1
    ChimeraX-Vive: 1.1
    ChimeraX-VolumeMenu: 1.0
    ChimeraX-VTK: 1.0
    ChimeraX-WavefrontOBJ: 1.0
    ChimeraX-WebCam: 1.0
    ChimeraX-WebServices: 1.0
    ChimeraX-Zone: 1.0
    colorama: 0.4.4
    comtypes: 1.1.10
    cxservices: 1.0
    cycler: 0.10.0
    Cython: 0.29.23
    decorator: 5.0.9
    distlib: 0.3.1
    docutils: 0.17.1
    filelock: 3.0.12
    funcparserlib: 0.3.6
    grako: 3.16.5
    h5py: 3.3.0
    html2text: 2020.1.16
    idna: 2.10
    ihm: 0.20
    imagecodecs: 2021.4.28
    imagesize: 1.2.0
    ipykernel: 5.5.5
    ipython: 7.23.1
    ipython-genutils: 0.2.0
    jedi: 0.18.0
    Jinja2: 2.11.3
    jupyter-client: 6.1.12
    jupyter-core: 4.7.1
    kiwisolver: 1.3.1
    lxml: 4.6.3
    lz4: 3.1.3
    MarkupSafe: 1.1.1
    matplotlib: 3.4.2
    matplotlib-inline: 0.1.2
    msgpack: 1.0.2
    netCDF4: 1.5.6
    networkx: 2.6.2
    numexpr: 2.7.3
    numpy: 1.21.0
    numpydoc: 1.1.0
    openvr: 1.16.801
    packaging: 21.0
    ParmEd: 3.2.0
    parso: 0.8.2
    pexpect: 4.8.0
    pickleshare: 0.7.5
    Pillow: 8.2.0
    pip: 21.1.1
    pkginfo: 1.7.0
    prompt-toolkit: 3.0.19
    psutil: 5.8.0
    ptyprocess: 0.7.0
    pycollada: 0.7.1
    pydicom: 2.1.2
    Pygments: 2.9.0
    PyOpenGL: 3.1.5
    PyOpenGL-accelerate: 3.1.5
    pyparsing: 2.4.7
    PyQt5: 5.15.2
    PyQt5-sip: 12.8.1
    PyQtWebEngine: 5.15.2
    python-dateutil: 2.8.1
    pytz: 2021.1
    PyYAML: 5.4.1
    pyzmq: 22.2.0
    qtconsole: 5.1.0
    QtPy: 1.9.0
    RandomWords: 0.3.0
    requests: 2.25.1
    scipy: 1.6.3
    Send2Trash: 1.5.0
    setuptools: 57.0.0
    sfftk-rw: 0.7.0.post1
    six: 1.16.0
    snowballstemmer: 2.1.0
    sortedcontainers: 2.4.0
    Sphinx: 4.0.1
    sphinxcontrib-applehelp: 1.0.2
    sphinxcontrib-blockdiag: 2.0.0
    sphinxcontrib-devhelp: 1.0.2
    sphinxcontrib-htmlhelp: 2.0.0
    sphinxcontrib-jsmath: 1.0.1
    sphinxcontrib-qthelp: 1.0.3
    sphinxcontrib-serializinghtml: 1.1.5
    suds-jurko: 0.6
    tifffile: 2021.4.8
    tinyarray: 1.2.3
    tornado: 6.1
    traitlets: 5.0.5
    urllib3: 1.26.6
    wcwidth: 0.2.5
    webcolors: 1.11.1
    wheel: 0.36.2
    wheel-filename: 1.3.0