botocore.retryhandler [DEBUG] No retry needed.

botocore.hooks [DEBUG] Event after-call.dynamodb.Query: calling handler <bound method TransformationInjector.inject_attribute_value_output of <boto3.dynamodb.transform.TransformationInjector object at 0x7f8f4a706d30>>

[ERROR] TypeError: Object of type Decimal is not JSON serializable
Traceback (most recent call last):
  File "/var/task/lambda_function.py", line 158, in lambda_handler
    for page in page_iterator:
  File "/var/runtime/botocore/paginate.py", line 280, in __iter__
    self._truncate_response(parsed, primary_result_key,
  File "/var/runtime/botocore/paginate.py", line 424, in _truncate_response
    self.resume_token = next_token
  File "/var/runtime/botocore/paginate.py", line 230, in resume_token
    self._resume_token = self._token_encoder.encode(value)
  File "/var/runtime/botocore/paginate.py", line 65, in encode
    json_string = json.dumps(encoded_token)
  File "/var/lang/lib/python3.8/json/__init__.py", line 231, in dumps
    return _default_encoder.encode(obj)
  File "/var/lang/lib/python3.8/json/encoder.py", line 199, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/var/lang/lib/python3.8/json/encoder.py", line 257, in iterencode
    return _iterencode(o, 0)
  File "/var/lang/lib/python3.8/json/encoder.py", line 179, in default
    raise TypeError(f'Object of type {o.__class__.__name__} '

page_iterator = ddb_client.get_paginator("query").paginate(PaginationConfig = { "MaxItem": n }, **other_arguments)

for page in page_iterator:
  for return_value in page["Items"]:
    print(return_value)

 $ git diff                                                                                                            
diff --git a/botocore/paginate.py b/botocore/paginate.py                                                                                                                   
index b08c7ed8b..501f8bf74 100644
--- a/botocore/paginate.py
+++ b/botocore/paginate.py
@@ -15,6 +15,7 @@ from itertools import tee
 
 from botocore.compat import six
 
+from decimal import Decimal
 import jmespath
 import json
 import base64
@@ -27,6 +28,13 @@ from botocore.utils import set_value_from_jmespath, merge_dicts
 log = logging.getLogger(__name__)
 
 
+class DecimalEncoder(json.JSONEncoder):
+    def default(self, o):
+        if isinstance(o, Decimal):
+            return str(o)
+        return json.JSONEncoder.default(o)
+
+
 class TokenEncoder(object):
     """Encodes dictionaries into opaque strings.
 
@@ -52,7 +60,7 @@ class TokenEncoder(object):
         try:
             # Try just using json dumps first to avoid having to traverse
             # and encode the dict. In 99.9999% of cases this will work.
-            json_string = json.dumps(token)
+            json_string = json.dumps(token, cls=DecimalEncoder)
         except (TypeError, UnicodeDecodeError):
             # If normal dumping failed, go through and base64 encode all bytes.
             encoded_token, encoded_keys = self._encode(token, [])