Merge pull request #1047 from effigies/mnt/py310-pre

CI: Test on Python 3.10

Author: effigies

.github/workflows/pre-release.yml

@@ -26,7 +26,7 @@ jobs:
     strategy:
       matrix:
         os: ['ubuntu-latest', 'windows-latest', 'macos-latest']
-        python-version: [3.8, 3.9]
+        python-version: ["3.8", "3.9", "3.10.0-rc.1"]
         architecture: ['x64', 'x86']
         install: ['setup']
         check: ['test']
@@ -48,9 +48,9 @@ jobs:
           - os: macos-latest
             architecture: x86
           - os: windows-latest
-            python-version: 3.9
+            python-version: "3.10.0-rc.1"
           - os: macos-latest
-            python-version: 3.9
+            python-version: "3.10.0-rc.1"
 
     env:
       DEPENDS: ${{ matrix.depends }}

nibabel/wrapstruct.py

@@ -411,7 +411,7 @@ def structarr(self):
         >>> wstr1.structarr = None
         Traceback (most recent call last):
            ...
-        AttributeError: can't set attribute
+        AttributeError: can't set attribute...
         """
         return self._structarr