STY: Apply suggestions from code review

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

Author: jond01

nibabel/streamlines/array_sequence.py

@@ -442,8 +442,7 @@ def __setitem__(self, idx, elements):
                 raise ValueError(msg)
 
             if sum(lengths) != elements.total_nb_rows:
-                msg = (f"Trying to set {sum(lengths)} points with "
-                       f"{elements.total_nb_rows} points.")
+                msg = f"Trying to set {sum(lengths)} points with {elements.total_nb_rows} points."
                 raise ValueError(msg)
 
             for o1, l1, o2, l2 in zip(offsets, lengths, elements._offsets, elements._lengths):

nibabel/tests/data/check_parrec_reslice.py

@@ -70,5 +70,4 @@ def gmean_norm(data):
         fixed_img = resample_img2img(normal_img, funny_img)
         fixed_data = fixed_img.get_fdata()
         difference_data = normal_normed - gmean_norm(fixed_data)
-        print(f'RMS resliced {parfile:<52} : '
-              f'{np.sqrt(np.sum(difference_data ** 2))}')
+        print(f'RMS resliced {parfile:<52} : {np.sqrt(np.sum(difference_data ** 2))}')