Improve migration user-friendliness

Signed-off-by: Salvatore Mesoraca <[email protected]>

README.md

@@ -49,6 +49,18 @@ b'bar'
 
 The above code connects to localhost on port 6379, sets a value in Redis, and retrieves it. All responses are returned as bytes in Python, to receive decoded strings, set *decode_responses=True*.  For this, and more connection options, see [these examples](https://valkey-py.readthedocs.io/en/stable/examples.html).
 
+### Migration from redis-py
+
+You are encouraged to use the new class names, but to allow for a smooth transition alias are available:
+
+``` python
+>>> import valkey as redis
+>>> r = redis.Redis(host='localhost', port=6379, db=0)
+>>> r.set('foo', 'bar')
+True
+>>> r.get('foo')
+b'bar'
+```
 
 #### RESP3 Support
 To enable support for RESP3, ensure you have at least version 5.0 of the client, and change your connection object to include *protocol=3*

valkey/__init__.py

@@ -60,6 +60,13 @@ def int_or_str(value):
 except AttributeError:
     VERSION = tuple([99, 99, 99])
 
+
+Redis = Valkey
+StrictRedis = StrictValkey
+RedisCluster = ValkeyCluster
+RedisError = ValkeyError
+
+
 __all__ = [
     "AuthenticationError",
     "AuthenticationWrongNumberOfArgsError",
@@ -71,24 +78,28 @@ def int_or_str(value):
     "ConnectionPool",
     "CredentialProvider",
     "DataError",
-    "from_url",
-    "default_backoff",
     "InvalidResponse",
     "OutOfMemoryError",
     "PubSubError",
     "ReadOnlyError",
-    "Valkey",
-    "ValkeyCluster",
-    "ValkeyError",
+    "Redis",
+    "RedisCluster",
+    "RedisError",
     "ResponseError",
+    "SSLConnection",
     "Sentinel",
     "SentinelConnectionPool",
     "SentinelManagedConnection",
     "SentinelManagedSSLConnection",
-    "SSLConnection",
-    "UsernamePasswordCredentialProvider",
+    "StrictRedis",
     "StrictValkey",
     "TimeoutError",
     "UnixDomainSocketConnection",
+    "UsernamePasswordCredentialProvider",
+    "Valkey",
+    "ValkeyCluster",
+    "ValkeyError",
     "WatchError",
+    "default_backoff",
+    "from_url",
 ]