Redis interacts with Python

Install package

There are 3 ways to install Redis https://github.com/andymccurdy/redis-py

• The first type: into the virtual environment, the United? Install the package Redis

  Pip Install Redis

• The second type: into the virtual environment, the United installation package Redis

  Easy_install Redis

• The third kind: to the official?-Client Download Redis package source code, so that the source installation

  Step-by-step execution of wget https://github.com/andymccurdy/redis-py/archive/master.zip
  Unzip Master.zip
  CD Redis-py-master
  sudo python setup.py install

Tuning Module

• Introduction module

  From Redis Import *

• The Strictredis object (strict strict) is provided in this module, which is used to connect Redis server and provide different methods according to different types. Interactive operation

Strictredis object? method

• Create an object from init, specify the parameter host, port with the specified server and end connection, host default is localhost,port default is 6379,db default is 0

sr = Strictredis (host= ' localhost ', port=6379, db=0) abbreviated Sr=strictredis ()

• Depending on the type, have a different instance? The method can be adjusted, corresponding to the Redis command of the pre-learning, the parameters required by the method and the parameters of the command.

String

• Set
• Setex
• Mset
• Append
• Get
• Mget
• Key

Keys

• Exists
• Type
• Delete
• Expire
• GetRange
• Ttl

Hash

• Hset
• Hmset
• Hkeys
• Hget
• Hmget
• Hvals
• Hdel

List

• Lpush
• Rpush
• Linsert
• Lrange
• LSet
• Lrem

Set

• Sadd
• Smembers
• Srem

Zset

• Zadd
• Zrange
• Zrangebyscore
• Zscore
• Zrem
• Zremrangebyscore

Get ready

• Create a Redis directory on the desktop
• Open the Redis directory using Pycharm
• Create a redis_string.py file

From Redis import *if __name__== "__main__":    try:        #创建StrictRedis对象, built with Redis server connection        Sr=strictredis ()    Except Exception as E:        print (e)

string-Increase

• Method set, add key, value, returns True if add succeeds, False if add failed
• Write the following code

From Redis import *if __name__== "__main__":    try:        #创建StrictRedis对象, built with Redis server connection        Sr=strictredis ()        #添加键name, the value is Skylark        result=sr.set (' name ', ' Skylark ')        #输出响应结果, returns True if add succeeds, otherwise false        print ( Result)    except Exception as E:        print (e)

string-get

• A. Get, add the value corresponding to the key, return the corresponding value if the key exists, or none if the key does not exist
• Write the following code

From Redis import *if __name__== "__main__":    try:        #创建StrictRedis对象, built with Redis server connection        Sr=strictredis ()        # Gets the value of the key name        , result = Sr.get (' name ')        #输出键的值, and returns none if the key does not exist        print (result)    except Exception as E:        Print (e)

string-modification

• Method set, if the key already exists in the change, if the key does not exist in the add

Write the following code

From Redis import *if __name__== "__main__":    try:        #创建StrictRedis对象, built with Redis server connection        Sr=strictredis ()        #设置键name的值, if the key already exists, then go in? Modify, if the key does not exist then go in? Add        result = Sr.set (' name ', ' Skylark ')        #输出响应结果, if the operation succeeds, returns True, Otherwise returns false        print (result)    except Exception as E:        print (e)

string-Delete

• Method Delete, delete key and corresponding value, return the affected key number if Delete succeeds, or return 0
• Write the following code

From Redis import *if __name__== "__main__":    try:        #创建StrictRedis对象, built with Redis server connection        Sr=strictredis ()        # Set the value of the key name, if the key already exists, in the change, if the key does not exist then into? Add        result = Sr.delete (' name ')        #输出响应结果 If the delete succeeds returns the number of keys affected, or 0        print ( Result)    except Exception as E:        print (e)

Get key

• The keys, get the key according to the regular expression
• Write the following code

From Redis import *if __name__== "__main__":    try:        #创建StrictRedis对象, built with Redis server connection        Sr=strictredis ()        #获取所有的键        Result=sr.keys ()        #输出响应结果, all keys form a list and return an empty list if there is no key        print (result)    except Exception as E:        print (e)

Now you're ready to start using Redis.

Redis interacts with Python