fix error

users-events/app/boto3clients.py

@@ -1,7 +1,17 @@
 import os
+from typing import TYPE_CHECKING
 
 import boto3
 
+if TYPE_CHECKING:
+    from mypy_boto3_dynamodb.client import DynamoDBClient
+    from mypy_boto3_s3.client import S3Client
+    from mypy_boto3_sesv2.client import SESV2Client
+else:
+    DynamoDBClient = object
+    S3Client = object
+    SESV2Client = object
+
 
 def get_dynamodb_client():
     if os.getenv('AWS_LAMBDA_FUNCTION_NAME'):
@@ -10,6 +20,6 @@ def get_dynamodb_client():
     return boto3.client('dynamodb', endpoint_url='http://127.0.0.1:8000')
 
 
-dynamodb_client = get_dynamodb_client()
-s3_client = boto3.client('s3')
-sesv2_client = boto3.client('sesv2')
+dynamodb_client: DynamoDBClient = get_dynamodb_client()
+s3_client: S3Client = boto3.client('s3')
+sesv2_client: SESV2Client = boto3.client('sesv2')