configparser ，shelve ，hashlib，random模块

import configparser
#生成一个这样的文档
config = configparser.ConfigParser()        #生成一个对象
config["DEFAULT"] = {‘ServerAliveInterval‘: ‘45‘,
                      ‘Compression‘: ‘yes‘,
                     ‘CompressionLevel‘: ‘9‘}

config[‘bitbucket.org‘] = {‘User‘: ‘hg‘}

config[‘topsecret.server.com‘] = {‘Port‘: ‘50022‘,
                                  ‘ForwardX11‘ : ‘no‘}

with open(‘example.ini‘, ‘w‘) as f:
    config.write(f)

#读取
import configparser
config = configparser.ConfigParser()        #定义一个对象

config.read(‘example.ini‘)      #读取文件

print(config.sections())      #显示除default之外的模块

for key in config[‘bitbucket.org‘]: print(key)

import shelve

d = shelve.open(‘shelve_test‘)   #打开一个文件

def stu_data(name,age):
    print("register",name,age)

name = ["alex","rain","test"]
info = {"name":"alex","age":22}

d["test"] = name
d["info"] = info
d[‘func‘] = stu_data

import shelve

def stu_data(name,age):
    print("stu",name,age)

d = shelve.open("shelev_test")
print(d.get("test"))
print(d.get("info"))
print(d.get("func")("test",30))

import hashlib      #md5算法，支持中文
m = hashlib.md5()
m.update(b"Hello")      #加密
m.update("支持中文".encode("utf-8"))
print(m)
print(m.hexdigest())

import hmac                 #hmac算法，双层加密
h = hmac.new(b‘wueiqi‘,‘your are 250‘.encode("utf-8"))      #自定义key
h.update(b‘hellowo‘)        #加密
print(h.hexdigest())

print(random.random())          #区间就0-1
print(random.uniform(1,10))     #指定区间
print(random.randint(1,5))      #取整数
print(random.randrange(1,10))  #不包含10
print(random.choice(‘hello‘))       #随机找一个值，也可以是列表，元祖
print(random.sample(‘hello‘,2))     #就取前两位

items = [1,2,3,4,5,6,7]
print(items) #[1, 2, 3, 4, 5, 6, 7]
random.shuffle(items)
print(items) #[1, 4, 7, 2, 5, 3, 6]

print(string.digits)        #打印数字
print(string.ascii_letters)     #打印字母
str_source = string.ascii_letters + string.digits
print(random.sample(str_source,7))

checkcode = ‘‘
for i in range(4):
    current = random.randrange(0,4)
    if current != i:
        temp = chr(random.randint(65,90))
    else:
        temp = random.randint(0,9)
    checkcode += str(temp)
print(checkcode)