DOC-4952 added Python scan iterator page

Author: andy-stark-redis

content/develop/clients/redis-py/scaniter.md

@@ -16,7 +16,7 @@ weight: 5
 ---
 
 Redis has a small family of related commands that retrieve
-keys and sometimes their associated values:
+keys and, in some cases, their associated values:
 
 -   [`SCAN`]({{< relref "/commands/scan" >}}) retrieves keys
     from the main Redis keyspace.
@@ -46,21 +46,68 @@ can pass `match`, `count`, and `_type` parameters to `scan_iter()` to constrain
 the set of keys it returns (see the [`SCAN`]({{< relref "/commands/scan" >}})
 command page for examples). 
 
-{{< clients-example scan_iter scan Python >}}
-{{< /clients-example >}}
+```py
+import redis
+
+r = redis.Redis(decode_responses=True)
+# REMOVE_START
+r.flushall()
+# REMOVE_END
+
+r.set("key:1", "a")
+r.set("key:2", "b")
+r.set("key:3", "c")
+r.set("key:4", "d")
+r.set("key:5", "e")
+
+for key in r.scan_iter():
+    print(f"Key: {key}, value: {r.get(key)}")
+# >>> Key: key:1, value: a
+# >>> Key: key:4, value: d
+# >>> Key: key:3, value: c
+# >>> Key: key:2, value: b
+# >>> Key: key:5, value: e
+```
 
 The iterators for the other commands are also named with `_iter()` after
 the name of the basic command (`hscan_iter()`, `sscan_iter()`, and `zscan_iter()`).
 They work in a similar way to `scan_iter()` except that you must pass a
 key to identify the object you want to scan. The example below shows how to
 iterate through the items in a sorted set using `zscan_iter()`.
 
-{{< clients-example scan_iter zscan Python >}}
-{{< /clients-example>}}
+```py
+r.zadd("battles", mapping={
+    "hastings": 1066,
+    "agincourt": 1415,
+    "trafalgar": 1805,
+    "somme": 1916,
+})
+
+for item in r.zscan_iter("battles"):
+    print(f"Key: {item[0]}, value: {int(item[1])}")
+# >>> Key: hastings, value: 1066
+# >>> Key: agincourt, value: 1415
+# >>> Key: trafalgar, value: 1805
+# >>> Key: somme, value: 1916
+```
 
 Note that in this case, the item returned by the iterator is a
 [tuple](https://docs.python.org/3/tutorial/datastructures.html#tuples-and-sequences)
 with two elements for the key and score. By default, `hscan_iter()`
 also returns a 2-tuple for the key and value, but you can
 pass a value of `True` for the `no_values` parameter to retrieve just
-the keys.
+the keys:
+
+```py
+r.hset("details", mapping={
+    "name": "Mr Benn",
+    "address": "52 Festive Road",
+    "hobbies": "Cosplay"
+})
+
+for key in r.hscan_iter("details", no_values=True):
+    print(f"Key: {key}, value: {r.hget("details", key)}")
+# >>> Key: name, value: Mr Benn
+# >>> Key: address, value: 52 Festive Road
+# >>> Key: hobbies, value: Cosplay
+```