Python学习笔记——filter（）实现埃氏筛选

#奇数序列生成器
def _odd_iter():
n = 1
while True:
n += 2
yield n

#筛选函数
def is_notDivisable(n):
return lambda x: x % n > 0

#奇数序列中筛选素数
def prime():
yield 2
it = _odd_iter()
while True:
n = next(it)
yield n
it = filter(is_notDivisable(n),it)

for  n in prime():
if n < 1000:
print(n)
else:
break