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
@@ -43,22 +44,30 @@ 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:
-        if creds and creds.expired and creds.refresh_token:
-            creds.refresh(Request())
-        else:
-            if not os.path.exists(client_secrets_file):
-                print(f'Client secrets file {client_secrets_file} not found')
-                sys.exit(1)
-            flow = InstalledAppFlow.from_client_secrets_file(
-                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())
+    # Valid credentials
+    if creds and creds.valid:
+        return creds
 
+    # Expired credentials
+    if creds and creds.expired and creds.refresh_token:
+        try:
+            creds.refresh(Request())
+            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)
+    flow = InstalledAppFlow.from_client_secrets_file(
+        client_secrets_file, scopes
+    )
+    creds = flow.run_local_server(port=0)
+    with open(token_file, "w") as token:
+        token.write(creds.to_json())
     return creds