When I'm generating a derived table in python, I often drop the table and create it from scratch. However, the first time I generate the table, it doesn't exist, so the drop raises an exception. That means more boilerplate.

I was going to submit a pull request that adds an "if_exists" option to the drop method of tables and views.

However, for a utility like sqlite_utils, perhaps the "IF EXISTS" SQL semantics is what you want most of the time, and thus should be the default.

What do you think?