MNT: Assorted refurb suggestions

nibabel/cifti2/cifti2.py

@@ -968,13 +968,13 @@ def vertex_indices(self, value):
     def _to_xml_element(self):
         brain_model = xml.Element('BrainModel')
 
-        for key in [
+        for key in (
             'IndexOffset',
             'IndexCount',
             'ModelType',
             'BrainStructure',
             'SurfaceNumberOfVertices',
-        ]:
+        ):
             attr = _underscore(key)
             value = getattr(self, attr)
             if value is not None:
@@ -1157,14 +1157,14 @@ def _to_xml_element(self):
         mat_ind_map = xml.Element('MatrixIndicesMap')
         dims_as_strings = [str(dim) for dim in self.applies_to_matrix_dimension]
         mat_ind_map.attrib['AppliesToMatrixDimension'] = ','.join(dims_as_strings)
-        for key in [
+        for key in (
             'IndicesMapToDataType',
             'NumberOfSeriesPoints',
             'SeriesExponent',
             'SeriesStart',
             'SeriesStep',
             'SeriesUnit',
-        ]:
+        ):
             attr = _underscore(key)
             value = getattr(self, attr)
             if value is not None:

nibabel/cifti2/parse_cifti2.py

@@ -203,13 +203,13 @@ def StartElementHandler(self, name, attrs):
                 applies_to_matrix_dimension=dimensions,
                 indices_map_to_data_type=attrs['IndicesMapToDataType'],
             )
-            for key, dtype in [
+            for key, dtype in (
                 ('NumberOfSeriesPoints', int),
                 ('SeriesExponent', int),
                 ('SeriesStart', float),
                 ('SeriesStep', float),
                 ('SeriesUnit', str),
-            ]:
+            ):
                 if key in attrs:
                     setattr(mim, _underscore(key), dtype(attrs[key]))
             matrix = self.struct_state[-1]
@@ -366,13 +366,13 @@ def StartElementHandler(self, name, attrs):
                     'BrainModel element can only be a child of a MatrixIndicesMap '
                     'with CIFTI_INDEX_TYPE_BRAIN_MODELS type'
                 )
-            for key, dtype in [
+            for key, dtype in (
                 ('IndexOffset', int),
                 ('IndexCount', int),
                 ('ModelType', str),
                 ('BrainStructure', str),
                 ('SurfaceNumberOfVertices', int),
-            ]:
+            ):
                 if key in attrs:
                     setattr(model, _underscore(key), dtype(attrs[key]))
             if model.brain_structure not in CIFTI_BRAIN_STRUCTURES:

nibabel/cmdline/ls.py

@@ -110,7 +110,7 @@ def proc_file(f, opts):
     if (
         hasattr(h, 'has_data_slope')
         and (h.has_data_slope or h.has_data_intercept)
-        and not h.get_slope_inter() in [(1.0, 0.0), (None, None)]
+        and not h.get_slope_inter() in ((1.0, 0.0), (None, None))
     ):
         row += ['@l*%.3g+%.3g' % h.get_slope_inter()]
     else:

nibabel/cmdline/parrec2nii.py

@@ -414,7 +414,7 @@ def main():
 
     verbose.switch = opts.verbose
 
-    if opts.origin not in ['scanner', 'fov']:
+    if opts.origin not in ('scanner', 'fov'):
         error(f"Unrecognized value for --origin: '{opts.origin}'.", 1)
     if opts.dwell_time and opts.field_strength is None:
         error('Need --field-strength for dwell time calculation', 1)

nibabel/cmdline/utils.py

@@ -73,15 +73,15 @@ def table2string(table, out=None):
             if item.startswith('@'):
                 align = item[1]
                 item = item[2:]
-                if align not in ['l', 'r', 'c', 'w']:
+                if align not in ('l', 'r', 'c', 'w'):
                     raise ValueError(f'Unknown alignment {align}. Known are l,r,c')
             else:
                 align = 'c'
 
             nspacesl = max(ceil((col_width[j] - len(item)) / 2.0), 0)
             nspacesr = max(col_width[j] - nspacesl - len(item), 0)
 
-            if align in ['w', 'c']:
+            if align in ('w', 'c'):
                 pass
             elif align == 'l':
                 nspacesl, nspacesr = 0, nspacesl + nspacesr

nibabel/freesurfer/io.py

@@ -63,7 +63,7 @@ def _read_volume_info(fobj):
             return volume_info
 
     volume_info['head'] = head
-    for key in ['valid', 'filename', 'volume', 'voxelsize', 'xras', 'yras', 'zras', 'cras']:
+    for key in ('valid', 'filename', 'volume', 'voxelsize', 'xras', 'yras', 'zras', 'cras'):
         pair = fobj.readline().decode('utf-8').split('=')
         if pair[0].strip() != key or len(pair) != 2:
             raise OSError('Error parsing volume info.')

nibabel/gifti/gifti.py

@@ -228,7 +228,7 @@ def _to_xml_element(self):
             label = xml.SubElement(labeltable, 'Label')
             label.attrib['Key'] = str(ele.key)
             label.text = ele.label
-            for attr in ['Red', 'Green', 'Blue', 'Alpha']:
+            for attr in ('Red', 'Green', 'Blue', 'Alpha'):
                 if getattr(ele, attr.lower(), None) is not None:
                     label.attrib[attr] = str(getattr(ele, attr.lower()))
         return labeltable

nibabel/gifti/parse_gifti_fast.py

@@ -333,7 +333,7 @@ def EndElementHandler(self, name):
             self.fsm_state.pop()
             self.coordsys = None
 
-        elif name in ['DataSpace', 'TransformedSpace', 'MatrixData', 'Name', 'Value', 'Data']:
+        elif name in ('DataSpace', 'TransformedSpace', 'MatrixData', 'Name', 'Value', 'Data'):
             self.write_to = None
 
         elif name == 'Label':

nibabel/nifti1.py

@@ -1636,10 +1636,11 @@ def set_slice_times(self, slice_times):
         labels = so_recoder.value_set('label')
         labels.remove('unknown')
 
-        matching_labels = []
-        for label in labels:
-            if np.all(st_order == self._slice_time_order(label, n_timed)):
-                matching_labels.append(label)
+        matching_labels = [
+            label
+            for label in labels
+            if np.all(st_order == self._slice_time_order(label, n_timed))
+        ]
 
         if not matching_labels:
             raise HeaderDataError(f'slice ordering of {st_order} fits with no known scheme')

nibabel/streamlines/array_sequence.py

@@ -72,7 +72,7 @@ def fn_binary_op(self, value):
         fn.__name__ = op
         fn.__doc__ = getattr(np.ndarray, op).__doc__
 
-    for op in [
+    for op in (
         '__add__',
         '__sub__',
         '__mul__',
@@ -85,14 +85,14 @@ def fn_binary_op(self, value):
         '__or__',
         '__and__',
         '__xor__',
-    ]:
+    ):
         _wrap(cls, op=op, inplace=False)
         _wrap(cls, op=f"__i{op.strip('_')}__", inplace=True)
 
-    for op in ['__eq__', '__ne__', '__lt__', '__le__', '__gt__', '__ge__']:
+    for op in ('__eq__', '__ne__', '__lt__', '__le__', '__gt__', '__ge__'):
         _wrap(cls, op)
 
-    for op in ['__neg__', '__abs__', '__invert__']:
+    for op in ('__neg__', '__abs__', '__invert__'):
         _wrap(cls, op, unary=True)
 
     return cls

nibabel/viewers.py

@@ -501,7 +501,7 @@ def _on_keypress(self, event):
         """Handle mpl keypress events"""
         if event.key is not None and 'escape' in event.key:
             self.close()
-        elif event.key in ['=', '+']:
+        elif event.key in ('=', '+'):
             # increment volume index
             new_idx = min(self._data_idx[3] + 1, self.n_volumes)
             self._set_volume_index(new_idx, update_slices=True)