Redis Basic Operations with Python: Setting, Getting, Deleting Keys, Hashes, Lists, and Sorted Sets

1. Set a key‑value pair Scenario: Use Redis to store a simple key and value.

import redis
def test_set_key_value():
    r = redis.Redis(host='localhost', port=6379, db=0)
    r.set('key', 'value')
    assert r.get('key') == b'value'

2. Get a key’s value Scenario: Retrieve the value associated with a key.

import redis
def test_get_key_value():
    r = redis.Redis(host='localhost', port=6379, db=0)
    value = r.get('key')
    assert value == b'value'

3. Delete a key Scenario: Remove a key from Redis.

import redis
def test_delete_key():
    r = redis.Redis(host='localhost', port=6379, db=0)
    r.delete('key')
    assert r.exists('key') is False

4. Check key existence Scenario: Verify whether a key exists.

import redis
def test_check_key_existence():
    r = redis.Redis(host='localhost', port=6379, db=0)
    exists = r.exists('key')
    assert exists is True

5. Set a hash table Scenario: Store multiple field‑value pairs in a Redis hash.

import redis
def test_set_hash():
    r = redis.Redis(host='localhost', port=6379, db=0)
    r.hset('hash', mapping={'field1': 'value1', 'field2': 'value2'})
    assert r.hget('hash', 'field1') == b'value1'

6. Get a value from a hash Scenario: Retrieve a specific field from a hash.

import redis
def test_get_hash_value():
    r = redis.Redis(host='localhost', port=6379, db=0)
    value = r.hget('hash', 'field1')
    assert value == b'value1'

7. List all hash fields Scenario: Obtain all field names of a hash.

import redis
def test_list_hash_fields():
    r = redis.Redis(host='localhost', port=6379, db=0)
    fields = r.hkeys('hash')
    assert b'field1' in fields and b'field2' in fields

8. Add elements to a list Scenario: Push multiple items onto a Redis list.

import redis
def test_add_list_element():
    r = redis.Redis(host='localhost', port=6379, db=0)
    r.rpush('list', 'element1', 'element2')
    assert r.llen('list') == 2

9. Retrieve an element from a list Scenario: Pop the first element from a list.

import redis
def test_get_list_element():
    r = redis.Redis(host='localhost', port=6379, db=0)
    element = r.lpop('list')
    assert element == b'element1'

10. Set a sorted set Scenario: Create a sorted set with scores.

import redis
def test_set_sorted_set():
    r = redis.Redis(host='localhost', port=6379, db=0)
    r.zadd('sorted_set', {'item1': 1, 'item2': 2})
    assert r.zscore('sorted_set', 'item1') == 1

All examples assume a locally running Redis instance on the default port 6379; adjust connection parameters as needed.