Eclipse IDE (Java) can run your project, even if it doesn't all compile. I expect this must be fairly common among IDEs with incremental compilers. You can run

Eclipse IDE (Java) can run your project, even if it doesn't all compile. I expect this must be fairly common among IDEs with incremental compilers. You can run valid sections & gradually progress the complete correctness. No need for a dynamic language. With static typed language, reliability and refactoring are easy. I'm scripting some small scripts in Python this week but every time I come back to it, I am reminded how not actually very good it is.