Also depends on your problem domain. If you have good test coverage but you're parsing strings found in the wild, you're going to spend a lot more time "debuggi

Also depends on your problem domain. If you have good test coverage but you're parsing strings found in the wild, you're going to spend a lot more time "debugging" your assumptions than AttributeErrors which would be caught by typing. Bug free code is not always the same as working code. Disclaimer: Python user scarred by email header RFC violations