docs(examples/azure): add async snippet (#1787)

Author: fedeoliv

examples/azure_ad.py

@@ -1,30 +1,67 @@
-from azure.identity import DefaultAzureCredential, get_bearer_token_provider
+import asyncio
 
-from openai import AzureOpenAI
+from openai.lib.azure import AzureOpenAI, AsyncAzureOpenAI, AzureADTokenProvider, AsyncAzureADTokenProvider
 
-token_provider = get_bearer_token_provider(DefaultAzureCredential(), "https://cognitiveservices.azure.com/.default")
+scopes = "https://cognitiveservices.azure.com/.default"
 
-
-# may change in the future
+# May change in the future
 # https://learn.microsoft.com/en-us/azure/ai-services/openai/reference#rest-api-versioning
 api_version = "2023-07-01-preview"
 
 # https://learn.microsoft.com/en-us/azure/cognitive-services/openai/how-to/create-resource?pivots=web-portal#create-a-resource
 endpoint = "https://my-resource.openai.azure.com"
 
-client = AzureOpenAI(
-    api_version=api_version,
-    azure_endpoint=endpoint,
-    azure_ad_token_provider=token_provider,
-)
-
-completion = client.chat.completions.create(
-    model="deployment-name",  # e.g. gpt-35-instant
-    messages=[
-        {
-            "role": "user",
-            "content": "How do I output all files in a directory using Python?",
-        },
-    ],
-)
-print(completion.to_json())
+deployment_name = "deployment-name"  # e.g. gpt-35-instant
+
+
+def sync_main() -> None:
+    from azure.identity import DefaultAzureCredential, get_bearer_token_provider
+
+    token_provider: AzureADTokenProvider = get_bearer_token_provider(DefaultAzureCredential(), scopes)
+
+    client = AzureOpenAI(
+        api_version=api_version,
+        azure_endpoint=endpoint,
+        azure_ad_token_provider=token_provider,
+    )
+
+    completion = client.chat.completions.create(
+        model=deployment_name,
+        messages=[
+            {
+                "role": "user",
+                "content": "How do I output all files in a directory using Python?",
+            }
+        ],
+    )
+
+    print(completion.to_json())
+
+
+async def async_main() -> None:
+    from azure.identity.aio import DefaultAzureCredential, get_bearer_token_provider
+
+    token_provider: AsyncAzureADTokenProvider = get_bearer_token_provider(DefaultAzureCredential(), scopes)
+
+    client = AsyncAzureOpenAI(
+        api_version=api_version,
+        azure_endpoint=endpoint,
+        azure_ad_token_provider=token_provider,
+    )
+
+    completion = await client.chat.completions.create(
+        model=deployment_name,
+        messages=[
+            {
+                "role": "user",
+                "content": "How do I output all files in a directory using Python?",
+            }
+        ],
+    )
+
+    print(completion.to_json())
+
+
+sync_main()
+
+asyncio.run(async_main())