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.