Also see PyToolz's implementation: https://toolz.readthedocs.io/en/latest/api.html#toolz.functoolz.thread_first https://toolz.readthedocs.io/en/latest/api.html#

Also see PyToolz's implementation: https://toolz.readthedocs.io/en/latest/api.html#toolz.functoolz.thread_first https://toolz.readthedocs.io/en/latest/api.html#toolz.functo... They differentiate thread first/last for Fns with arity > 1, just like Clojure.