python生成器、迭代器

a = [0,1,2,3,4,5,6,7,8,9]
for k,v in enumerate(a):
    a[k] = v+1
a = map(lambda x:x+1,a)
a = [i+1 for i in a]
a = [i*i if i > 5 else i+10 for i in a]

a = [0,1,2,3,4,5,6,7,8,9]
a = (i*i if i > 5 else i+10 for i in a)
print(next(a))
print(a.__next__())

def fib(max):
    n,a,b=0,0,1
    while n < max:
        yield b
        a,b=b,a+b
        n+=1
    return ‘done‘

f = fib(15)
print(f.__next__())
print(‘生成器yield保存了函数的中断状态‘)
print(f.__next__())

import time
def consumer(name):
    print("%s 准备吃包子了！" % name)
    while True:
        baozi = yield
        print("包子[%s]来了，被[%s]吃了" % (baozi,name))

def producer(name):
    c = consumer(‘李磊‘)
    c2 = consumer(‘杨帅‘)
    c.__next__()
    c2.__next__()
    print("%s开始准备做包子啦！" % name)
    for i in range(10):
        time.sleep(1)
        print("做了2个包子！")
        c.send(i)
        c2.send(i)

producer(‘alex‘)