yield
yield不仅可以返回值，也可以接收值
# yield返回值, 生成器 def gen(): for x in ["a", "b", "c"]: yield x for i in gen(): print(i) # a b c
# yield接收值, 协程
def gen():
while True:
x = yield
print("x = %s"% x)
g = gen()
next(g) # 执行到yield， 激活协程 send(None) ”预激(prime)“协程
g.send(10)
g.send(20)
g.send(30)
g.close()
"""
x = 10
x = 20
x = 30
"""yield from
yield from调用生成器
# 调用生成器 def gen(): yield from ["x", "y", "z"] for i in gen(): print(i) # x y z
参考
