class_docstr: Class to preprocess single subject in SPM
      
class_docstr_tok: ["Class","to","preprocess","single","subject","in","SPM"]
code: def add_ana_defaults(self, ana_def):
      full_ana_def = deepcopy(ana_def)
      if "fwhm" not in full_ana_def:
          full_ana_def["fwhm"] = 8.0
      return full_ana_def
  
imports: import gzip
  import sys
  from copy import deepcopy
  from glob import glob
  from os.path import abspath, isfile, splitext
  from os.path import join
  from warnings import warn
  import numpy
  import nipy.interfaces.matlab
  from nipy.interfaces.spm import fltcols, fname_presuffix, fnames_presuffix, make_job, run_jobdef, scans_for_fnames, spm_info
label_desc: Use image node_id 3 for calling the SPMSubjectAnalysis obj's underlying member method code with example usage: obj.add_ana_defaults(ana_def) and returns: full_ana_def