Python 3.8 support + Cleaning up some issues in extracting files out …

…of the prompts (#355)

* Changed typing to fit python 3.8

* Made sure GPT won't add in comments about the files as these confuse the chat-to-files regex

gpt_engineer/ai.py

@@ -2,6 +2,8 @@
 
 import logging
 
+from typing import Dict, List
+
 import openai
 
 logger = logging.getLogger(__name__)
@@ -29,7 +31,7 @@ def fuser(self, msg):
     def fassistant(self, msg):
         return {"role": "assistant", "content": msg}
 
-    def next(self, messages: list[dict[str, str]], prompt=None):
+    def next(self, messages: List[Dict[str, str]], prompt=None):
         if prompt:
             messages += [{"role": "user", "content": prompt}]
 

gpt_engineer/preprompts/generate

@@ -14,6 +14,8 @@ FILENAME
 CODE
 ```
 
+Do not comment on what every file does
+
 You will start with the "entrypoint" file, then go to the ones that are imported by that file, and so on.
 Please note that the code should be fully functional. No placeholders.