生成器函数进阶

def generator():
    print(123)
    yield 1
    print(456)
    yield 2
g = generator()
ret = g.__next__()
print(ret)
ret = g.__next__()
print(ret)

def generator():
    print(123)
    content = yield 1
    print("====",content)
    print(456)
    yield 2
g = generator()
ret = g.__next__()
print(ret)
ret = g.send("hello")
print(ret)

def average():
    sum = 0
    count = 0
    avg = 0
    while True:
        num = yield avg   #在这里返回
        sum += num
        count += 1
        avg = sum/count

avg_g = average()
avg_g.__next__()
avg1 = avg_g.send(10)
avg1 = avg_g.send(20)
print(avg1)

def generator():
    a = "ABCDE"
    b = "12345"
    yield from a
    yield from b
g = generator()
for i in g :
    print(i)

执行结果：
A
B
C
D
E
1
2
3
4
5