Python study notes 6--operating redis

1. Redis operation

import redis

r=redis.Redis(host='211.149.218.16',port=6379,password='123456',db=2)
r.set('suki','suki123')#insert a value of type string
The values ​​read by print(r.get('suki').decode())#redis are all Byte types, which are converted to strings with decode
r.delete ('suki')
r.setex('suki','hahahaha',10)#Specify the expiration time of the key r.setex(key,value,time)


#hash type
r.hset('sessions','suki','123456') #rediskey：sessions rowkey:suki
print(r.hget('sessions','suki'))#Get data
print(r.hgetall('sessions'))#Get all data


redis_data=r.hgetall('sessions')
all_data={}
for k,v in redis_data.items():
    k=k.decode()
    v=v.decode()
    all_data[k]=v
print(redis_data)
print(all_data)


#The following is the kind with a hierarchy and a folder
r.set('txz:suki','did not pay')
r.set('txz:ski:ski2','paid')
print(r.keys())
print(r.keys('txz*'))#Fuzzy match, get the key at the beginning of txz
print(r.type('txz'))#Get the type of key

　　

　　

Second, redis packaging

def op_redis(host,password,k,v=None,port=6379,db=0):
    r=redis.Redis(host=host,password=password,port=port,db=db)
    if v:#If the value is passed in, it means that it is a write operation
        r.set(k,v)
        res='ok'
    else:
        res=r.get(k)
        if res: #return value if there is a value
            res=res.decode()
        else:
            res=None
    return res