fix example

Author: salma1601

nipype/interfaces/afni/preprocess.py

@@ -3483,12 +3483,17 @@ class Qwarp(AFNICommand):
  >>> qwarp3.inputs.allineate = True
  >>> qwarp3.inputs.allineate_opts = '-cose lpa -verb'
  >>> qwarp3.cmdline # doctest: +ALLOW_UNICODE
- "3dQwarp -base mni.nii -allineate -allineate_opts '-cost lpa -verb'"
+ "3dQwarp -allineate -allineate_opts '-cose lpa -verb' -base mni.nii -source structural.nii -prefix structural_QW"
  >>> res3 = qwarp3.run() # doctest: +SKIP """
  _cmd = '3dQwarp'
  input_spec = QwarpInputSpec
  output_spec = QwarpOutputSpec
 
+ def _format_arg(self, name, spec, value):
+ if name == 'allineate_opts':
+ return spec.argstr % ("'" + value + "'")
+ return super(Qwarp, self)._format_arg(name, spec, value)
+
  def _list_outputs(self):
  outputs = self.output_spec().get()