code: def cleaniddfield(acomm):
      
      for key in list(acomm.keys()):
          val = acomm[key]
          acomm[key.lower()] = val
      for key in list(acomm.keys()):
          val = acomm[key]
          if key != key.lower():
              acomm.pop(key)
      return acomm
docs: make all the keys lower case