Handle refresh token error

robocyp.py

@@ -5,6 +5,7 @@ import os
 import sys
 
 from google.auth.transport.requests import Request
+from google.auth.exceptions import RefreshError
 from google.oauth2.credentials import Credentials
 from google_auth_oauthlib.flow import InstalledAppFlow
 from googleapiclient.discovery import build
@@ -43,11 +44,21 @@ def get_yt_creds():
     if os.path.exists(token_file):
         creds = Credentials.from_authorized_user_file(token_file, scopes)
 
-    # If there are no (valid) credentials available, let the user log in.
-    if not creds or not creds.valid:
+    # Valid credentials
+    if creds and creds.valid:
+        return creds
+
+    # Expired credentials
     if creds and creds.expired and creds.refresh_token:
+        try:
             creds.refresh(Request())
-        else:
+            with open(token_file, "w") as token:
+                token.write(creds.to_json())
+            return creds
+        except RefreshError as err:
+            print(f'Error refreshing token: {err}')
+
+    # No credentials or cannot refresh
     if not os.path.exists(client_secrets_file):
         print(f'Client secrets file {client_secrets_file} not found')
         sys.exit(1)
@@ -55,10 +66,8 @@ def get_yt_creds():
         client_secrets_file, scopes
     )
     creds = flow.run_local_server(port=0)
-        # Save the credentials for the next run
     with open(token_file, "w") as token:
         token.write(creds.to_json())
-
     return creds