Connecting with Python

This guide explains how to connect a Python application to a Redis database using the redis library. It walks through the required setup, configuration, and execution of a simple Redis command.

Variables

To connect to Redis, the following parameters are needed. You can find these values in the Elestio Redis service overview.

Variable	Description	Purpose
HOST	Redis hostname (from Elestio service overview)	Address of the Redis server.
PORT	Redis port (from Elestio service overview)	Port used to connect to Redis. The default is 6379.
PASSWORD	Redis password (from Elestio service overview)	Authentication credential for the Redis connection.

Be sure to collect these details from your Elestio Redis service and use them in your Python script.

Prerequisites

Install Python and pip

• Check if Python is installed by running:

python3 --version

• If not installed, download and install it from python.org.

• Check pip (Python package installer):

pip --version

Install the redis Package

Install the official redis library using pip:

pip install redis

Code

Create a file named redis.py and paste the following code:

import redis

config = {
    "host": "HOST",
    "port": PORT,  # Example: 6379
    "password": "PASSWORD",
    "decode_responses": True
}

try:
    client = redis.Redis(**config)
    client.set("testKey", "Hello Redis")
    value = client.get("testKey")
    print("Connected to Redis")
    print("Retrieved value:", value)

except redis.RedisError as err:
    print("Redis connection or operation failed:", err)

To execute the script, open the terminal or command prompt and navigate to the directory where redis.py is located. Once in the correct directory, run the script with the command:

python3 redis.py

If everything is set up correctly, the output will be:

Connected to Redis  
Retrieved value: Hello Redis