diff --git a/acceptance/python/src/test_basic.py b/acceptance/python/src/test_basic.py
index 65d08de..ddc8cba 100644
--- a/acceptance/python/src/test_basic.py
+++ b/acceptance/python/src/test_basic.py
@@ -78,7 +78,7 @@ def test_basic():
 
     # A `TRANSFER` transaction contains a pointer to the original asset. The original asset
     # is identified by the `id` of the `CREATE` transaction that defined it.
-    transfer_asset = {'id': bike_id}
+    transfer_assets = [{'id': bike_id}]
 
     # Alice wants to spend the one and only output available, the one with index `0`.
     output_index = 0
@@ -98,7 +98,7 @@ def test_basic():
     # Now that all the elements are set, she creates the actual transaction...
     prepared_transfer_tx = bdb.transactions.prepare(
             operation='TRANSFER',
-            assets=transfer_asset,
+            assets=transfer_assets,
             inputs=transfer_input,
             recipients=bob.public_key)
 
diff --git a/acceptance/python/src/test_divisible_asset.py b/acceptance/python/src/test_divisible_asset.py
index 6d7db5f..8799d88 100644
--- a/acceptance/python/src/test_divisible_asset.py
+++ b/acceptance/python/src/test_divisible_asset.py
@@ -50,7 +50,7 @@ def test_divisible_assets():
     # the description, Bob and Alice agree that each token can be used to ride
     # the bike for one hour.
 
-    bike_token = {
+    bike_token = [{
         'data': {
             'token_for': {
                 'bike': {
@@ -59,7 +59,7 @@ def test_divisible_assets():
             },
             'description': 'Time share token. Each token equals one hour of riding.',
         },
-    }
+    }]
 
     # She prepares a `CREATE` transaction and issues 10 tokens.
     # Here, Alice defines in a tuple that she wants to assign
@@ -94,7 +94,7 @@ def test_divisible_assets():
     # To use the bike he has to send the tokens back to Alice.
     # To learn about the details of transferring a transaction check out
     # [test_basic.py](./test_basic.html)
-    transfer_asset = {'id': bike_token_id}
+    transfer_assets = [{'id': bike_token_id}]
 
     output_index = 0
     output = fulfilled_token_tx['outputs'][output_index]
@@ -108,7 +108,7 @@ def test_divisible_assets():
     # amount he wants to use to Alice.
     prepared_transfer_tx = bdb.transactions.prepare(
         operation='TRANSFER',
-        assets=transfer_asset,
+        assets=transfer_assets,
         inputs=transfer_input,
         recipients=[([alice.public_key], 3), ([bob.public_key], 7)])
 
@@ -136,7 +136,7 @@ def test_divisible_assets():
     # Now he wants to ride for 8 hours, that's a lot Bob!
     # He prepares the transaction again.
 
-    transfer_asset = {'id': bike_token_id}
+    transfer_assets = [{'id': bike_token_id}]
     # This time we need an `output_index` of 1, since we have two outputs
     # in the `fulfilled_transfer_tx` we created before. The first output with
     # index 0 is for Alice and the second output is for Bob.
@@ -155,7 +155,7 @@ def test_divisible_assets():
     # to spend all his tokens
     prepared_transfer_tx = bdb.transactions.prepare(
         operation='TRANSFER',
-        assets=transfer_asset,
+        assets=transfer_assets,
         inputs=transfer_input,
         recipients=[([alice.public_key], 8)])
 
diff --git a/acceptance/python/src/test_double_spend.py b/acceptance/python/src/test_double_spend.py
index 48eca3b..bbc266c 100644
--- a/acceptance/python/src/test_double_spend.py
+++ b/acceptance/python/src/test_double_spend.py
@@ -26,7 +26,7 @@ def test_double_create():
             bdb.transactions.prepare(
                 operation='CREATE',
                 signers=alice.public_key,
-                assets={'data': {'uuid': str(uuid4())}}),
+                assets=[{'data': {'uuid': str(uuid4())}}]),
             private_keys=alice.private_key)
 
     def send_and_queue(tx):
diff --git a/acceptance/python/src/test_multiple_owners.py b/acceptance/python/src/test_multiple_owners.py
index 6400477..12793d5 100644
--- a/acceptance/python/src/test_multiple_owners.py
+++ b/acceptance/python/src/test_multiple_owners.py
@@ -57,7 +57,7 @@ def test_multiple_owners():
         operation='CREATE',
         signers=alice.public_key,
         recipients=(alice.public_key, bob.public_key),
-        assets=dw_asset)
+        assets=[dw_asset])
 
     # Now they both sign the transaction by providing their private keys.
     # And send it afterwards.
@@ -88,7 +88,7 @@ def test_multiple_owners():
 
     # Alice and Bob prepare the transaction to transfer the dish washer to
     # Carol.
-    transfer_asset = {'id': dw_id}
+    transfer_assets = [{'id': dw_id}]
 
     output_index = 0
     output = fulfilled_dw_tx['outputs'][output_index]
@@ -101,7 +101,7 @@ def test_multiple_owners():
     # Now they create the transaction...
     prepared_transfer_tx = bdb.transactions.prepare(
         operation='TRANSFER',
-        assets=transfer_asset,
+        assets=transfer_assets,
         inputs=transfer_input,
         recipients=carol.public_key)