use deprecated for weight_file

Author: salma1601

nipype/interfaces/afni/preprocess.py

@@ -353,6 +353,13 @@ class AllineateInputSpec(AFNICommandInputSpec):
         argstr='-nomask',
         desc='Don\'t compute the autoweight/mask; if -weight is not '
              'also used, then every voxel will be counted equally.')
+    weight_file = File(
+        argstr='-weight %s',
+        exists=True,
+        deprecated='1.0.0', new_name='weight',
+        desc='Set the weighting for each voxel in the base dataset; '
+             'larger weights mean that voxel count more in the cost function. '
+             'Must be defined on the same grid as the base dataset')
     weight = traits.Either(
         File(exists=True), traits.Float(),
         argstr='-weight %s',

nipype/interfaces/afni/tests/test_auto_Allineate.py

@@ -119,6 +119,10 @@ def test_Allineate_inputs():
     ),
     weight=dict(argstr='-weight %s',
     ),
+    weight_file=dict(argstr='-weight %s',
+    deprecated='1.0.0',
+    new_name='weight',
+    ),
     zclip=dict(argstr='-zclip',
     ),
     )