Retrieve object indexed by <key>

def get(self, key):
    
    """
    Retrieve object indexed by <key>
    """

    try:
      try:
        obj = self.bucket.get(key)
      except couchbase.exception.MemcachedError, inst: 
        if str(inst) == "Memcached error #1:  Not found":
          # for some reason the py cb client raises an error when
          # a key isnt found, instead we just want a none value.
          obj = None
        else:
          raise
      except:
        raise
      
      if obj:
        return json.loads(obj[2])
      else:
        return None

    except:
      raise