[__mharrison__]

Folks need to learn how to debug chains. The juice of writing with intermediate variables is not worth the squeeze.

[_ZeD_]

I'll byte: how do you debug chains without intermediate values?

[__mharrison__]

Disclaimer: I wrote a book about pandas that is semi famous because it focuses on chaining. And it has a while chapter on debugging chains.

Debugging: use a debugger, create intermediate variables using .pipe (and side effects), logging, testing, writing your code clearly (use good naming).