Add Python Builder

fly.toml

@@ -1,16 +1,19 @@
-# fly.toml app configuration file generated for hello-fly-langchain on 2023-04-26T11:34:12+02:00
+# fly.toml app configuration file generated for hello-fly-langchain on 2023-05-02T15:33:58+02:00
 #
 # See https://fly.io/docs/reference/configuration/ for information about how to use this file.
 #
 
 app = "hello-fly-langchain"
 primary_region = "ams"
 kill_signal = "SIGINT"
-kill_timeout = 5
+kill_timeout = "5s"
 
 [experimental]
   auto_rollback = true
 
+[build]
+  builder = "paketobuildpacks/builder:base"
+
 [env]
   PORT = "8080"
   PRIMARY_REGION = "ams"

hello.py

@@ -18,10 +18,10 @@ def hello(place="Berlin"):
     llm = OpenAI(temperature=0.9)
     # https://python.langchain.com/en/latest/modules/prompts/prompt_templates.html
     prompt = PromptTemplate(
-        input_variables=['place'],  # list of variables
+        input_variables=["place"],  # list of variables
         template="What are the 3 best places to eat in {place}?",  # prompt
     )
     question = prompt.format(place=place)
     # split() is used to split the items into a list. The llm response will look like:
     # "\n\n1. <first item>.\n\n2. <second item>..."
-    return render_template('hello.html', place=place, answer=llm(question).split("\n\n"))
+    return render_template("hello.html", place=place, answer=llm(question).split("\n\n"))