Lazy iterators for Python 3, in the spirit of LINQ or Java Stream. Has easy multithreading built in
Simply pip install laziter. It's lightweight and has no dependencies (if you choose not to use the pathos multiprocess implementation)
from laziter import laziter
import time
def sleeper(x):
time.sleep(2)
return x
lz = laziter([2, 3, [range(1000), 90], 9])
lz2 = (lz
.flatten()
.filter(lambda a: a % 2)
.skip(998)
.take(4)
.map(lambda x: x * x)
.parmap(sleeper)
)
print(sum(lz2))
print(list(lz2[2:4]))