MNT: Python 3 string formatting: %i → %d

Co-authored-by: Chris Markiewicz <effigies@gmail.com>

Author: DimitriPapadopoulos

nibabel/freesurfer/io.py

@@ -465,7 +465,7 @@ def _read_annot_ctab_new_format(fobj, ctab_version):
     dt = _ANNOT_DT
     # This code works with a file version == 2, nothing else
     if ctab_version != 2:
-        raise Exception('Unrecognised .annot file version (%i)', ctab_version)
+        raise Exception(f'Unrecognised .annot file version ({ctab_version})')
     # maximum LUT index present in the file
     max_index = np.fromfile(fobj, dt, 1)[0]
     ctab = np.zeros((max_index, 5), dt)

nibabel/gifti/util.py

@@ -10,7 +10,7 @@
 from ..volumeutils import Recoder
 
 # Translate dtype.kind char codes to XML text output strings
-KIND2FMT = {'i': '%i', 'u': '%i', 'f': '%10.6f', 'c': '%10.6f', 'V': ''}
+KIND2FMT = {'i': '%d', 'u': '%d', 'f': '%10.6f', 'c': '%10.6f', 'V': ''}
 
 array_index_order_codes = Recoder(
     (