More like cement. I don't mean to be dismissive, but REPLs aren't created equal. I've used good IDEs with Python and Java and C#. The C# debugger is probably th

More like cement. I don't mean to be dismissive, but REPLs aren't created equal. I've used good IDEs with Python and Java and C#. The C# debugger is probably the best, but its really not the same thing. Python could probably embrace it more so, and if you've used Jupyter, you got a pretty good taste of what it means to mold a running program, now imagine doing that for all programs, not just data science reports.