有参装饰器，迭代器，生成器 练习

# 1、编写课上讲解的有参装饰器准备明天默写
'''
def timer(x,y,z):
    def outter(func):
        def wrapper(*args,**kwargs):
            res=func(*args,**kwargs)
            return res
        return wrapper
    return outter

@timer(x=1,y=2,z=3)
def info():
    print('666')

info()
'''
# 2：还记得我们用函数对象的概念，制作一个函数字典的操作吗，来来来，我们有更高大上的做法，在文件开头声明一个空字典，然后在每个函数前加上装饰器，完成自动添加到字典的操作
'''
dic={'0':'drop_out(退出)'}
def userinfo(x,y):
    def outter(func):
        def wrapper(*args, **kwargs):
            if x not in dic:
                dic.setdefault(x,y)
                res = func(*args, **kwargs)
                return res
            else:
                print('{x}功能已存在'.format(x))
        return wrapper
    return outter

# func_dic={
#     '0':'drop_out(退出)',
#     '1':'login（登录）',
#     '2':'transfer(转账)',
#     '3':'check_banlance(查询余额)',
#     '4':'withdraw(提现)',
#     '5':'register(注册)'
# }
@userinfo(x='1',y='login（登录）')
def login():
    print('登录')
@userinfo(x='2',y='transfer(转账)')
def transfer():
    print('转账')
@userinfo(x='3',y='check_banlance(查询余额)')
def check_banlance():
    print('查询余额')
@userinfo(x='4',y='withdraw(提现)')
def withdraw():
    print('提现')
@userinfo(x='5',y='register(注册)')
def register():
    print('注册')

login()
print(dic)
transfer()
print(dic)
check_banlance()
print(dic)
withdraw()
print(dic)
register()
print(dic)
'''
# 3、 编写日志装饰器，实现功能如：一旦函数f1执行，则将消息2017-07-21 11:12:11 f1 run写入到日志文件中，日志文件路径可以指定
# 注意：时间格式的获取
'''
import time
l=time.strftime('%Y-%m-%d %X')
def apps(x):
    def outter(func):
        def wrapper(*args, **kwargs):
            with open('db.txt',mode='at',encoding='utf-8')as f:
                f.write(x)
            res = func(*args, **kwargs)
            return res
        return wrapper
    return outter

@apps(x='{} f1 run'.format(l))
def f1():
    print('f1')
f1()
'''
# 4、基于迭代器的方式，用while循环迭代取值字符串、列表、元组、字典、集合、文件对象
'''
s1='tank:100000000'
d=s1.__iter__()
print(d.__next__())

l=['tank',10000]
dl=l.__iter__()
print(dl.__next__())

t=(1,'tank')
dt=t.__iter__()
print(dt.__next__())

d={'a':1,'b':2}
dd=d.__iter__()
print(dd.__next__())

set1={1,2,3}
ds=set1.__iter__()
print(ds.__next__())

with open('db.txt',mode='r') as f:
    df=f.__iter__()
    print(df.__next__())
'''
# 5、自定义迭代器实现range功能
'''
def my_range(start,stop,step=1):
    while start < stop:
        yield start
        start+=step
    print('end>>:')

s=my_range(1,10,2)
print(s.__next__())
print(s.__next__())
print(s.__next__())
print(s.__next__())
print(s.__next__())
print(s.__next__())
'''