update README.md

python/README.md

@@ -13,7 +13,7 @@ OpenDHT is a lightweight Distributed Hash Table implementation providing an easy
 
 Every node in the network can read and write values to the store. Values are distributed over the network with redundancy.
 
-## Install
+## Installation
 
 Install on Linux, macOS and Windows with:
 ```sh
@@ -43,30 +43,39 @@ for value in results:
 
 Or using asyncio:
 ```python
+import asyncio
 import opendht.aio as dht
 
-async with dht.DhtRunner() as node:
-    node.bootstrap("bootstrap.jami.net", "4222")
+async def dht_async_demo(key_str: str):
+    # Start a new node using an async context manager.
+    # It is also possible to call run()/await shutdown() manually.
+    async with dht.DhtRunner(
+        bootstrap=(("bootstrap.jami.net", "4222"),)
+    ) as node:
+        # compute key hash
+        key = dht.InfoHash.get(key_str)
 
-    # put data, waiting for completion
-    await node.put(dht.InfoHash.get("unique_key"), dht.Value(b'tata data'))
+        # put data, waiting for completion
+        await node.put(key, dht.Value(b'tata data'))
 
-    # get all values at key
-    results = await node.getAll(dht.InfoHash.get("unique_key"))
-    for value in results:
-        print(value)
-    
-    # same operation, but stream values as they come from the network
-    with node.get(dht.InfoHash.get("unique_key")) as results:
-        async for value in results:
+        # get all values at key
+        results = await node.getAll(key)
+        for value in results:
             print(value)
+        
+        # same operation, but stream values as they come from the network
+        with node.get(key) as results:
+            async for value in results:
+                print(value)
 
-    # listen for changes of values at key
-    with node.listen(dht.InfoHash.get("unique_key")) as values:
-        async for value, expired in values:
-            print(value)
-            if value.data == b'tata data':
-                break
+        # listen for change of values at key
+        with node.listen(key) as values:
+            async for value, expired in values:
+                print(value)
+                if value.data == b'tata data':
+                    break
+
+asyncio.run(dht_async_demo("unique_key"))
 ```
 
 ## Documentation