USER_INFO = {}def check_login(func):def inner(*args, **kwargs):if USER_INFO.get('is_login', None):ret = func(*args, **kwargs)return retelse:print('please login')return innerdef check_admin(func):def inner(*args, **kwargs):if USER_INFO.get('type', None) == 2:ret = func(*args, **kwargs)return retelse:print('no permission')return inner@check_login
@check_admin
def index():        # managerprint('Index')def home():            # userprint('home')def login():user = input('input username\n>>>')pwd = input('input password\n>>>')if user == 'admin' and pwd == 'admin':USER_INFO['is_login'] = TrueUSER_INFO['type'] = 2else:if user == 'wayne' and pwd == 'phuck':USER_INFO['is_login'] = TrueUSER_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 1print(222)yield 2print(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 = 0while True:if start > arg:returnyield startstart += 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 res
else:
res = 1
return resr = mul(8)
print(r)

import sys
for 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 requests
import 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))