<human>:  How can I subtract or add 100 years to a datetime field in the database in Django?
<bot>: Here is some code to update datetime field in `MyModel` to be the existing `timestamp` plus 100 years

MyModel.objects.update(timestamp=F('timestamp') + timedelta(days=36524.25))

#Warning: this code generation is experimental. Please inspect the code for any bugs before executing.