google styled doc

mail_intake/credentials/pickle.py

@@ -1,6 +1,10 @@
 """
 Local filesystem–based credential persistence for Mail Intake.
 
+---
+
+## Summary
+
 This module provides a file-backed implementation of the
 ``CredentialStore`` abstraction using Python's ``pickle`` module.
 
@@ -29,13 +33,16 @@ class PickleCredentialStore(CredentialStore[T]):
     filesystem. It is a simple implementation intended primarily for
     development, testing, and single-process execution contexts.
 
-    This implementation:
-    - Stores credentials on the local filesystem
-    - Uses pickle for serialization and deserialization
-    - Does not provide encryption, locking, or concurrency guarantees
+    Notes:
+        **Guarantees:**
 
-    Credential lifecycle management, validation, and refresh logic are
-    explicitly out of scope for this class.
+            - Stores credentials on the local filesystem
+            - Uses pickle for serialization and deserialization
+            - Does not provide encryption, locking, or concurrency guarantees
+
+        **Constraints:**
+        
+            - Credential lifecycle management, validation, and refresh logic are explicitly out of scope for this class
     """
 
     def __init__(self, path: str):
@@ -43,7 +50,7 @@ class PickleCredentialStore(CredentialStore[T]):
         Initialize a pickle-backed credential store.
 
         Args:
-            path:
+            path (str):
                 Filesystem path where credentials will be stored.
                 The file will be created or overwritten as needed.
         """
@@ -53,15 +60,16 @@ class PickleCredentialStore(CredentialStore[T]):
         """
         Load credentials from the local filesystem.
 
-        If the credential file does not exist or cannot be successfully
-        deserialized, this method returns ``None``.
-
-        The store does not attempt to validate or interpret the returned
-        credentials.
-
         Returns:
-            An instance of type ``T`` if credentials are present and
-            successfully deserialized; otherwise ``None``.
+            Optional[T]:
+                An instance of type ``T`` if credentials are present and
+                successfully deserialized; otherwise ``None``.
+
+        Notes:
+            **Guarantees:**
+
+                - If the credential file does not exist or cannot be successfully deserialized, this method returns ``None``
+                - The store does not attempt to validate or interpret the returned credentials
         """
         try:
             with open(self.path, "rb") as fh:
@@ -73,12 +81,14 @@ class PickleCredentialStore(CredentialStore[T]):
         """
         Persist credentials to the local filesystem.
 
-        Any previously stored credentials at the configured path are
-        overwritten.
-
         Args:
-            credentials:
+            credentials (T):
                 The credential object to persist.
+
+        Notes:
+            **Responsibilities:**
+
+                - Any previously stored credentials at the configured path are overwritten
         """
         with open(self.path, "wb") as fh:
             pickle.dump(credentials, fh)
@@ -87,8 +97,10 @@ class PickleCredentialStore(CredentialStore[T]):
         """
         Remove persisted credentials from the local filesystem.
 
-        This method deletes the credential file if it exists and should
-        be treated as an idempotent operation.
+        Notes:
+            **Lifecycle:**
+
+                - This method deletes the credential file if it exists and should be treated as an idempotent operation
         """
         import os