Generator magic

gistfile1.py

def pattern(gen):
	def middle(*args):
		def inner():
			for i in gen(*args):
				if hasattr(i, "_scheduler_recurse_into_me"):
					yield from i()
				else:
					yield i
		inner._scheduler_recurse_into_me = True
		return inner
	return middle

@pattern
def lst(l):
	yield from l

print(lst)
p = lst([1,2,3,lst([4,5])])
print(p)
print(list(p()))
print(list(p()))