human
What is a the Python program you requested given the following:
I am working on the file "Lektion09.ipynb".
The first task is:
Funktionen als Argumente
"Functions are first class citizens"
Can you write Python program for it?
assistant
#Here is the Python program you requested.

def komposition(f, g):
    "gibt die Funktion f ∘ g zurück"
    def func(x):
        return f(g(x))
    return func

h = komposition(cos, sqrt)
h(pi**2)

x = Symbol('x')
h(x)