USER_INFO = {}def check_login(func):	def inner(*args, **kwargs):		if USER_INFO.get(‘is_login‘, None):			ret = func(*args, **kwargs)			return ret		else:			print(‘please login‘)	return innerdef check_admin(func):	def inner(*args, **kwargs):		if USER_INFO.get(‘type‘, None) == 2:			ret = func(*args, **kwargs)			return ret		else:			print(‘no permission‘)	return inner@check_login@check_admindef index():		# manager	print(‘Index‘)def home():			# user	print(‘home‘)def login():	user = input(‘input username\n>>>‘)	pwd = input(‘input password\n>>>‘)	if user == ‘admin‘ and pwd == ‘admin‘:		USER_INFO[‘is_login‘] = True		USER_INFO[‘type‘] = 2	else:		if user == ‘wayne‘ and pwd == ‘phuck‘:			USER_INFO[‘is_login‘] = True			USER_INFO[‘type‘] = 1def main():	while True:		inp = input(‘1.login 2.information 3.management\n>>>‘)		if inp == ‘1‘:			login()		elif inp == ‘2‘:			home()		elif inp == ‘3‘:			index()main()

# s1 = ‘i am %s‘ %‘alex‘# s1 = ‘i am %s age %d‘ %(‘alex‘,18)# s1 = ‘i am %(name)s age %(age)d‘ %{‘name‘:‘alex‘,‘age‘:18}# s1 = ‘percent %.2f‘ %99.97623# s1 = ‘i am %(pp).2f‘ %{‘pp‘:123.425556}# s1 = ‘i am %.2f %%‘ %123.43556# print(s1)s1 = ‘i am {}, age {}, {}‘.format(‘seven‘,18,‘alex‘)s1 = ‘i am {}, age {}, {}‘.format(*[‘seven‘,18,‘alex‘])s1 = ‘i am {0}, age {1}, really {0}‘.format(‘seven‘,19)s1 = ‘i am {0}, age {1}, really {0}‘.format(*[‘seven‘,19])s1 = ‘i am {name}, age {age}, really {name}‘.format(name=‘seven‘,age=20)s1 = ‘i am {name}, age {age}, really {name}‘.format(**{‘name‘:‘seven‘,‘age‘:20})s1 = ‘i am {0[0]}, age {1[1]}, really {0[2]}‘.format([1,2,3],[11,22,33])s1 = ‘i am {:s}, age {:d}, money {:f}‘.format(‘seven‘,18,8888.1)s1 = ‘i am {:s}, age {:d}‘.format(*[‘seven‘,18])s1 = ‘i am {name:s}, age {age:d}‘.format(name=‘seven‘,age=18)s1 = ‘i am {name:s}, age {age:d}‘.format(**{‘name‘:‘seven‘,‘age‘:18})s1 = ‘numbers:{:#b},{:#o},{:#d},{:#x},{:#X},{:%}‘.format(15,15,15,15,15,15,87623,2)s1 = ‘numbers:{0:b},{0:o},{0:d},{0:x},{0:X},{1:%}‘.format(15,16)s1 = ‘numbers:{num:b},{num:o},{num:d},{num:x},{num:X},{num:%}‘.format(num=15)print(s1)

>>> def func():... yield 1... yield 2... yield 3... yield 4...>>>>>> temp = func()>>> temp<generator object func at 0x00000207CC064A40>>>> temp.__next__()1>>> temp.__next__()2>>> temp.__next__()3>>> temp.__next__()4>>> temp.__next__()Traceback (most recent call last):File "<stdin>", line 1, in <module>StopIteration>>>

def func():	print(111)	yield 1	print(222)	yield 2	print(333)	yield 3ret = func()r1 = ret.__next__()  # 进入函数找到yield，获取yield后面的数据print(r1)r2 = ret.__next__()print(r2)r3 = ret.__next__()print(r3)# r4 = ret.__next__()# print(r4)

def myrange(arg):	start = 0	while True:		if start > arg:			return		yield start		start += 1ret = myrange(3)r = ret.__next__()print(r)r = ret.__next__()print(r)r = ret.__next__()print(r)r = ret.__next__()print(r)

>>> a = iter([1,2,3,4,5])>>> a<list_iterator object at 0x00000207CC08FFD0>>>> a.__next__()1>>> a.__next__()2>>> a.__next__()3>>> a.__next__()4>>> a.__next__()5>>> a.__next__()Traceback (most recent call last):File "<stdin>", line 1, in <module>StopIteration

def mul(n):if n>1:res = n * mul(n-1)return reselse:res = 1return resr = mul(8)print(r)

import sysfor item in sys.path:print(item)sys.path.append(‘E:\\‘)

# import json# dic = {‘k1‘: ‘v1‘}# print(dic, type(dic))## res = json.dumps(dic)  # 将python的基本数据类型转化成字符串类型# print(res,type(res))### s1 = ‘{"abc": 123}‘  # 外面单引号，里面双引号# dic2 = json.loads(s1)  # 将python的字符串类型转化成基本数据类型# print(dic2, type(dic2))import jsonli = [11,22,33]json.dump(li, open(‘db‘, ‘w‘))  # dump:列表转化为字符串，再写入文件li = json.load(open(‘db‘,‘r‘))  # load:读取文件，并将字符串转化为列表print(type(li),li)

import requestsimport json_test1response = requests.get(‘http://wthrcdn.etouch.cn/weather_mini?city=北京‘)response.encoding = ‘utf-8‘print(type(response.text))dic = json_test1.loads(response.text)print(type(dic))