Python: infinite loop in functional syntax

python3_loop_functional.py

"""
From Python 3.3, functional programing on top of generators has been reached a new state-level.
Infinite loop without memory footprint with just a `list()` over the magic.

https://stackoverflow.com/questions/13243766/python-empty-generator-function

A new ofuscated way to hide traditional server-loops is here, muajajaja.
"""

def classical_yield():
  for i in range(10):
    print(i, end=' ')
    yield

def empty_yield():
  for i in range(10):
    print(i, end=' ')
    yield from ()

"""
>>> list(classical_yield())
1 2 3 4 5 6 7 8 9
[None, None, None, None, None, None, None, None, None, None]

>>> list(empty_yield())
1 2 3 4 5 6 7 8 9
[]
"""

def forever():
  while True:
    # [...]
    yield from ()
"""
>>> list(forever())
"""