Update app.py

app.py

@@ -14,19 +14,20 @@ bedrock_runtime = boto3.client(
     region_name = "us-west-2"
 )
 
+# See https://docs.anthropic.com/claude/reference/complete_post
 def invoke(prompt):
-    body = json.dumps({"prompt": "Human: " + prompt + "\nAssistant: ",
+    body = json.dumps({"prompt": "\n\nHuman: " + prompt + "\n\nAssistant: ",
                        "max_tokens_to_sample": 300,
                        "temperature": 1,
                        "top_k": 250,
                        "top_p": 0.999,
-                       "stop_sequences": ["\nHuman: "]
+                       "stop_sequences": ["\n\nHuman: "]
                       })
     #print(body)
     modelId = "anthropic.claude-v2"
     accept = "application/json"
     contentType = "application/json"
-    response = bedrock_runtime.invoke_model(body=body, modelId=modelId, accept=accept, contentType=contentType)
+    response = bedrock_runtime.invoke_model(body = body, modelId = modelId, accept = accept, contentType = contentType)
     response_body = json.loads(response.get("body").read())
     return response_body["completion"]