Python操作Redis的5种数据类型

Posted 2020-08-14

１．连接redis（两种方式）

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  1  # decode_responses=True: 解决获取的值类型是bytes字节问题
  2  r = redis.Redis(host=‘localhost‘, port=‘6379‘, db=0, decode_responses=True)

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  1  pool = redis.ConnectionPool(host=‘localhost‘, port=6379, db=0, decode_responses=True)
  2  r = redis.Redis(connection_pool=pool)

２．字符串类型　String

1  # ex过期时间 单位秒S
2  r.set(‘name‘, ‘Jack‘, ex=20)
3  rst = r.get(‘name‘)
4  print(rst)
5  
6  
7  结果：　"Jack"

３．列表类型　list　　　　

 1  r.lpush(‘object‘, ‘one‘)
 2  r.lpush(‘object‘, ‘two‘)
 3  r.lpush(‘object‘, ‘three‘)
 4  r.lpush(‘object‘, ‘four‘)
 5  r.lpush(‘object‘, ‘five‘)
 6  r.lpush(‘object‘, ‘six‘)
 7  ret = r.lrange(‘object‘, 0, 5)
 8  print(ret[::-1], len(ret))
 9    
10   
11  结果：　[‘one‘, ‘two‘, ‘three‘, ‘four‘, ‘five‘, ‘six‘] 　6

４．哈希类型  hash

1  r.hset(‘user:info‘, ‘name‘, ‘Jack‘)
2  r.hset(‘user:info‘, ‘age‘, 20)
3  r.hset(‘user:info‘, ‘phone‘, ‘18712909999‘)
4  r.hset(‘user:info‘, ‘email‘, ‘[email protected]‘)
5  rst = r.hgetall(‘user:info‘)
6  print(rst)
7 
8 
9  结果：　{‘age‘: ‘20‘, ‘email‘: ‘[email protected]‘, ‘name‘: ‘Jack‘, ‘phone‘: ‘18712909999‘}

５．集合类型  set

1  r.sadd(‘set‘, ‘one‘)
2  r.sadd(‘set‘, ‘two‘)
3  r.sadd(‘set‘, ‘three‘)
4  res = r.smembers(‘set‘)
5  print(res)
6 
7 
8  结果：　{‘two‘, ‘one‘, ‘three‘}

６．有序集合类型　sorted set　

 1  r.zadd(‘mark‘, ‘one‘, 1)
 2  r.zadd(‘mark‘, ‘two‘, 2)
 3  r.zadd(‘mark‘, ‘three‘, 3)
 4  r.zadd(‘mark‘, ‘four‘, 4)
 5  r.zadd(‘mark‘, ‘five‘, 5)
 6  result = r.zrange(‘mark‘, 0, 10)
 7  print(result)
 8 
 9 
10  结果：　[‘one‘, ‘two‘, ‘three‘, ‘four‘, ‘five‘]