知識點：

send(i) ：喚醒yield，並將 i 的值傳給 yield

例項：

#!/user/bin env python
# author:Simple-Sir
# time:20181020
# 單執行緒併發：做一個包子，兩個人吃
import time
# 吃包子生成器
def chibaozi(name):
    print('%s想吃包子了！' %name)
    while True:
        baozi = yield #
        print('第%s個包子來了，被%s吃了一半！'%(baozi,name))

# 邏輯解析
 

# c = chibaozi('SimpleGirl')
# c.__next__()  # 喚醒yield
# b1='牛肉包子'
# c.send(b1)  # 注：喚醒yield，並將b1的值傳給 yield

# 做包子生成器
def zuobaozi(name):
    c1 = chibaozi('SimpleSir')
    c2 = chibaozi('SimpleGirl')
    c1.__next__()
    c2.__next__()
    print('%s開始做包子了！'%name)
    for i in range(1,6):
        time.sleep(
 
1)
        print('%s做了1個包子！'%name)
        c1.send(i)
        c2.send(i)

# 呼叫函式
zuobaozi('SimpleSir')

執行結果：