code: def contract_hash_to_address(self, contract_hash):
          
          if not re.match(r"0x[a-fA-F0-9]{64}", contract_hash):
              raise CriticalError("Invalid address hash. Expected format is '0x...'.")
  
          print(self.leveldb.contract_hash_to_address(contract_hash))
docs: Returns address of the corresponding hash by searching the leveldb
          :param contract_hash: Hash to be searched