coroutine2.py

"""

使用协程 - 查看协程的状态

Version: 0.1
Author: 骆昊
Date: 2018-03-21

"""

from time import sleep
from inspect import getgeneratorstate


def build_deliver_man(man_id):
	total = 0
	while True:
		total += 1
		print('%d号快递员准备接今天的第%d单.' % (man_id, total))
		pkg = yield
		print('%d号快递员收到编号为%s的包裹.' % (man_id, pkg))
		sleep(0.5)


def package_center(deliver_man, max_per_day):
	num = 1
	# 创建状态(GEN_CREATED) - 等待开始执行
	print(getgeneratorstate(deliver_man))
	deliver_man.send(None)
	# 挂起状态(GEN_SUSPENDED) - 在yield表达式处暂停
	print(getgeneratorstate(deliver_man))
	# next(deliver_man)
	while num <= max_per_day:
		package_id = 'PKG-%d' % num
		deliver_man.send(package_id)
		num += 1
	deliver_man.close()
	# 结束状态(GEN_CLOSED) - 执行完毕
	print(getgeneratorstate(deliver_man))
	print('今天的包裹派送完毕!')


dm = build_deliver_man(1)
package_center(dm, 10)