STY: Apply ruff/flynt rule FLY002

FLY002 Consider f-string instead of string join

Author: DimitriPapadopoulos

nibabel/batteryrunners.py

@@ -252,7 +252,7 @@ def __str__(self):
     def message(self):
         """formatted message string, including fix message if present"""
         if self.fix_msg:
-            return '; '.join((self.problem_msg, self.fix_msg))
+            return f'{self.problem_msg}; {self.fix_msg}'
         return self.problem_msg
 
     def log_raise(self, logger, error_level=40):

nibabel/gifti/tests/test_gifti.py

@@ -423,14 +423,11 @@ def test_gifti_coord(capsys):
     gcs.xform = None
     gcs.print_summary()
     captured = capsys.readouterr()
-    assert captured.out == '\n'.join(
-        [
-            'Dataspace:  NIFTI_XFORM_UNKNOWN',
-            'XFormSpace:  NIFTI_XFORM_UNKNOWN',
-            'Affine Transformation Matrix: ',
-            ' None\n',
-        ]
-    )
+    assert captured.out == '''Dataspace:  NIFTI_XFORM_UNKNOWN
+XFormSpace:  NIFTI_XFORM_UNKNOWN
+Affine Transformation Matrix: 
+ None
+ '''
     gcs.to_xml()