Some Notes on App Engine Datastore

Limitations

• Maximum size of an entity: 1 MB
• Maximum number of elements of a ListProperty: 5000
• CSV file for bulk loader:
  Longest line: 131072 characters.
  Update: This can be fixed by csv.field_size_limit(sys.maxint).

Reminders

• Use double quote twice ("") to escape a double quote in CSV files.