python的学习之路（四）

#迭代器，取值只能用next方法，不能随意取值
name = iter([11,22,33,44])
print(name.__next__())
print(name.__next__())
print(name.__next__())

#生成器，函数含有yield则为生成器，生成器的返回值为迭代器
def cash_money(acount):
    while acount>0:
        acount -=100
        yield 100
        print('就是花钱，任性')

atm = cash_money(500)
print(atm.__next__())
print(atm.__next__())
print('出去消费')
print(atm.__next__())

import  time

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

def producter(name):
    print("开始做包子了")
    c = consumer("A")
    c1 = consumer("B")
    c.__next__()
    c1.__next__()
    for i in range(10):
        time.sleep(1)
        print("做了两个包子")
        c.send(i)
        c1.send(i)
producter("alex")

#装饰器，函数前加@+函数名
def login(func):
    def inner(args):
        print("check now")
        func(args)

    return inner

def home(name):
    print("welcome %s to home page" %name)

@login
def tv(name):
    print("welcome %s to tv" %name)

def movie(name):
    print("welcome to %s movie" %name)

#tv = login(tv)
# home = login(home)
# movie = login(movie)

tv("alex")