code: def groupAnagrams(self, strs):
      strs.sort()
      hash = {}
      for s in strs:
          key = self.hash_key(s)
          try:
              hash[key].append(s)
          except KeyError:
              hash[key] = [s]
      return hash.values()
  
label_desc: Use image node_id 1 for calling the Solution obj's underlying member method code with example usage: obj.groupAnagrams(strs) and returns: hash