Here's another whacky idea: how about adding a so-called FuncSeq to the collections library for composing functions?

Since FuncSeq is (obviously) a sequence, that might help with the intuition of the function application order. The idea is the function application order is the same as the iteration order of the sequence:

from collections import FuncSeq

fun_seq = FuncSeq([str, len])

fun_seq(789) # 3

fun_seq[::-1]("789") # '3'

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Ricky.

"I've never met a Kentucky man who wasn't either thinking about going home or actually going home." - Happy Chandler