fix imports

app/notifications/sns_cert_validator.py

@@ -2,14 +2,15 @@ import base64
 import re
 from urllib.parse import urlparse
 
+import requests
+import six
+
 # import oscrypto.asymmetric
 # import oscrypto.errors
 from cryptography import x509
+from cryptography.exceptions import InvalidSignature
 from cryptography.hazmat.primitives import hashes
 from cryptography.hazmat.primitives.asymmetric import padding
-from cryptography.exceptions import InvalidSignature
-import requests
-import six
 
 from app import redis_store
 from app.config import Config
@@ -122,10 +123,7 @@ def validate_sns_cert(sns_payload):
     try:
         public_key = certificate.public_key()
         public_key.verify(
-            signature,
-            string_to_sign,
-            padding.PKCS1v15(),
-            hashes.SHA256()  # or SHA1?
+            signature, string_to_sign, padding.PKCS1v15(), hashes.SHA256()  # or SHA1?
         )
         # oscrypto.asymmetric.rsa_pkcs1v15_verify(
         #    oscrypto.asymmetric.load_certificate(certificate),