code: def verifyUniqueWcsname(fname,wcsname):
      
      uniq = True
      numsci,extname = count_sci_extensions(fname)
      wnames = altwcs.wcsnames(fname,ext=(extname,1))
  
      if wcsname in wnames.values():
          uniq = False
  
      return uniq
docs: Report whether or not the specified WCSNAME already exists in the file