数据库笔记（10）- Python 操作Redis

Python 操作Redis

1. 安装及连接

Pip install redis

连接

import redis

# 加入Strict 严格上的，
r = redis.StrictRedis(host='localhost', port=6379, db=0)
# 兼容一些老版本啊
#r = redis.Redis(host='localhost', port=6379, db=0)

user1 = r.get('user1')
print(user1) # b'Jhon'

2. 字符串的操作

自带一些连接池

class TestString(object):

    ""
    def __init__(self):
        self.r = redis.StrictRedis(host='localhost', port=6379, db=0)

    def test_set(self):
        ''' set  -- 设置值'''
        rest = self.r.set('user2','Amy')
        print(rest)
        return rest

    def test_get(self):
        ''' get  -- 获取值'''
        rest = self.r.get('user3')
        print(rest)
        return rest

    def test_mset(self):
        ''' mset -- 设置多个键值对'''
        d = {
            'user3':'Bob',
            'user4':'Bobx'
        }
        rest = self.r.mset(d)
        print(rest)
        return rest

    def test_mget(self):
        '''mget == 获取多个键值对'''
        l = ['user3','user4']
        rest = self.r.mget(l)
        print(rest)
        return rest

    def test_del(self):
        '''del == 删除'''
        rest = self.r.delete('user3')
        print(rest)

def main():
    str_obj = TestString()
    # str_obj.test_set()
    str_obj.test_get()
    #str_obj.test_mset()
    #str_obj.test_mget()
    #str_obj.test_del()

3. 列表（List）的操作

class TestList(object):

    def __init__(self):
        self.r =  redis.StrictRedis(host='localhost', port=6379, db=0)

    def test_push(self):
        ''' lpush/rpush   --从左/右插入数据'''
        t = ('Amy', 'Jhon')
        rest = self.r.lpush('l_eat3',*t)
        print(rest)
        rest= self.r.lrange('l_eat3',0,-1)
        print(rest)

    def test_pop(self):
        ''' lpop/rpop   -- 移除最左最右的元素并返回'''
        rest = self.r.lpop('l_eat3')
        print(rest)
        rest = self.r.lrange('l_eat3', 0, -1)
        print(rest)

4. 集合（Set）的操作

# coding:utf-8

import redis

class Base(object):
    def __init__(self):
        self.r =  redis.StrictRedis(host='localhost', port=6379, db=0)

class TestString(object):

    ""
    def __init__(self):
        self.r = redis.StrictRedis(host='localhost', port=6379, db=0)

    def test_set(self):
        ''' set  -- 设置值'''
        rest = self.r.set('user2','Amy')
        print(rest)
        return rest

    def test_get(self):
        ''' get  -- 获取值'''
        rest = self.r.get('user3')
        print(rest)
        return rest

    def test_mset(self):
        ''' mset -- 设置多个键值对'''
        d = {
            'user3':'Bob',
            'user4':'Bobx'
        }
        rest = self.r.mset(d)
        print(rest)
        return rest

    def test_mget(self):
        '''mget == 获取多个键值对'''
        l = ['user3','user4']
        rest = self.r.mget(l)
        print(rest)
        return rest

    def test_del(self):
        '''del == 删除'''
        rest = self.r.delete('user3')
        print(rest)

class TestList(object):

    def __init__(self):
        self.r =  redis.StrictRedis(host='localhost', port=6379, db=0)

    def test_push(self):
        ''' lpush/rpush   --从左/右插入数据'''
        t = ('Amy', 'Jhon')
        rest = self.r.lpush('l_eat3',*t)
        print(rest)
        rest= self.r.lrange('l_eat3',0,-1)
        print(rest)

    def test_pop(self):
        ''' lpop/rpop   -- 移除最左最右的元素并返回'''
        rest = self.r.lpop('l_eat3')
        print(rest)
        rest = self.r.lrange('l_eat3', 0, -1)
        print(rest)

class TestSet(Base):

    def test_sadd(self):
        ''' sadd  -- 添加元素'''
        l = ['Cat','Dog']
        rest = self.r.sadd('zoo3',*l)
        print(rest)
        rest = self.r.smembers('zoo3')
        print(rest)

    def test_srem(self):
        ''' srem  === 删除元素'''
        rest = self.r.srem('zoo2', 'Dog')
        print(rest)
        rest = self.r.smembers('zoo2')
        print(rest)

    def test_sinter(self):
        ''' sinter --- 返回几个集合的交集'''
        rest = self.r.sinter('zoo2','zoo3')
        print(rest)





def main():
    str_obj = TestString()
    # str_obj.test_set()
    #str_obj.test_get()
    #str_obj.test_mset()
    #str_obj.test_mget()
    #str_obj.test_del()

    # 列表
    #list_obj = TestList()
    #list_obj.test_push()

    #list_obj.test_pop()

    # 集合
    set_obj = TestSet()
    #set_obj.test_sadd()
    # set_obj.test_srem()
    set_obj.test_sinter()



if __name__ == '__main__':
    main()

数据库笔记（1）-简述
数据库笔记（2）- Mysql 基础
数据库笔记（3）-ORM
数据库笔记（4）-网易新闻的实战
数据库笔记（5）- MongoDB基础
数据库笔记（6）- Python 操作MongoDB
数据库笔记（7）- MongoDB ORM
数据库笔记（8）- 网易新闻实战
数据库笔记（9）- Redis 数据库基础
数据库笔记（10）- Python 操作Redis