Add 'id' property to TransactionBody and Transaction

Author: cffls

pycardano/transaction.py

@@ -315,6 +315,10 @@ def hash(self) -> bytes:
             self.to_cbor(encoding="bytes"), TRANSACTION_HASH_SIZE, encoder=RawEncoder
         )
 
+    @property
+    def id(self) -> TransactionId:
+        return TransactionId(self.hash())
+
 
 @dataclass(repr=False)
 class Transaction(ArrayCBORSerializable):
@@ -325,3 +329,7 @@ class Transaction(ArrayCBORSerializable):
     valid: bool = True
 
     auxiliary_data: Union[AuxiliaryData, type(None)] = None
+
+    @property
+    def id(self) -> TransactionId:
+        return self.transaction_body.id

test/pycardano/test_transaction.py

@@ -117,6 +117,11 @@ def test_transaction():
     vk_witness = [VerificationKeyWitness(vk, signature)]
     signed_tx = Transaction(tx_body, TransactionWitnessSet(vkey_witnesses=vk_witness))
     check_two_way_cbor(signed_tx)
+    expected_tx_id = TransactionId.from_primitive(
+        "4b5b9ed087b596150f8c95f14de821ab066ddb74f00919228acf33b85d9ca6ca"
+    )
+    assert expected_tx_id == tx_body.id
+    assert expected_tx_id == signed_tx.id
 
 
 def test_multi_asset():