Implementing more complex descriptors

We can easily write the following commands:

@f_wrap
@g_wrap
def h(x):
    something

There's nothing in Python to stop us. This has a meaning somewhat like . However, the name is merely . Because of this potential confusion, we need to be cautious when creating functions that involve deeply nested descriptors. If our intent is simply to handle some cross-cutting concerns, then each decorator can handle a concern without creating much confusion.

If, on the other hand, we're using a decoration to create a composite function, it might also be better to use the following command:

f_g_h= f_wrap(g_wrap(h))

This clarifies as to what precisely is going on. Decorator functions don't correspond precisely with the mathematical abstraction of functions being composed. The decorator function actually contains a wrapper function that will contain the function being composed. This distinction between a function and a decorator that creates a composite from the function...