code: def make_full_path(basedir, outkey, origname):
      
      return os.path.join(basedir, outkey,
                          os.path.basename(origname).replace('.fits',
                                                             '_%s.fits' % outkey))
docs: Make a full file path by combining tokens
  
      Parameters
      -----------
  
      basedir : str
          The top level output area
  
      outkey : str
          The key for the particular instance of the analysis
  
      origname : str
          Template for the output file name
  
      Returns
      -------
  
      outpath : str
          This will be <basedir>:<outkey>:<newname>.fits 
          Where newname = origname.replace('.fits', '_<outkey>.fits')