Day25--nosql string manipulation, list operation, set operation

Tag: is the middle Number Union Div range operation get string

Manipulation of strings
#redis中的string is stored in memory by a key corresponding to a valus.

1 ImportRedis2 3Pool = Redis. ConnectionPool (host="192.168.1.5", port=6379, db=0)4R = Redis. Redis (connection_pool=pool)5R.set ('name','WXP')6 #print (R.keys ())7 Print(R.get ("name"))8R.mset (name1 ='W', name2 ='x')9 Print(R.mget ('name1','name2'))TenR.mset ({"a":"1","b":"2"}) One Print(R.mget ('a','b'))

Output Result:

Wxp
[' W ', ' X ']
[' 1 ', ' 2 ']

List operations:
Pool = Redis. ConnectionPool (host= "192.168.1.5", port=6379, Db=0)
R = Redis. Redis (Connection_pool=pool)
#lpush add an element to the left of the list
#rpush add an element to the right of the list.
R.lpush (' List1 ', ' test1 ')
R.lpush (' List1 ', ' test2 ')
R.rpush (' List1 ', ' WXP ')
R.lpush (' List1 ', 2,3,4)
Print (R.lrange ("List1", 0,-1))
#最终的list结果是 [4,3,2, "Test1", WXP]

#在中间位置增加一个元素, Linsert
#where represents the key value of the list pair
# The Pavilion element in the Refvalue list
#value the value you want to increase
R.linsert ("List1", "after", "Test2", "Hello")
Print (R.lrange ("List1", 0,-1))
#lset change an element
R.lset ("List1", 2, "word")
Print (R.lrange ("List1", 0,-1))
#lindex查看list某个下标的值
Print (R.lindex ("List1", 2))
#lpop从list的最左边删除一个元素, returns the value of the deleted element
Print (R.lpop ("List1"))
Print (R.lrange ("List1", 0,-1))
#r. Lrem (name,value,num):
#num, num=0, removes all the specified values from the list:
#num = 2, from front to back, delete 2
#num =-2, remove 2 from the back
R.lrem ("List1", "World")
Print (R.lrange ("List1", 0,-1))

Collection operations:

1 ImportRedis2 3Pool = Redis. ConnectionPool (host="192.168.1.5", port=6379, db=0)4R = Redis. Redis (connection_pool=pool)5 #R.sadd (Name,*args) (element cannot be duplicated) collection adds a name corresponding to a collection6R.sadd ("Set_name",'AA','BB','cc')7 #Smember is to view all the elements of a collection8 Print(R.smembers ("Set_name"))9 #SCard equivalent to list Lem to view the number of elementsTen Print(R.scard ("Set_name")) One #Srem (name,value) deletes an element from the specified collection with value AR.srem ("Set_name","AA") - Print(R.smembers ("Set_name")) -R.sadd ("set_name1","cc","DD","ee") the #Sinter intersection of two sets - Print(R.sinter ("Set_name","set_name1")) - #sunion Two sets of aggregates - Print(R.sunion ("Set_name","set_name1"))

Day25--nosql string manipulation, list operation, set operation