move redundant part to init

Author: w95wayne10

api/chatgpt.py

@@ -8,15 +8,20 @@
 class ChatGPT:
     def __init__(self):
         self.prompt = Prompt()
+        self.model = os.getenv("OPENAI_MODEL",default="text-davinci-003")
+        self.temperature = int(os.getenv("OPENAI_TEMPERATURE",default="0"))
+        self.frequency_penalty = int(os.getenv("OPENAI_FREQUENCY_PENALTY",default="0"))
+        self.presence_penalty = float(os.getenv("OPENAI_PRESENCE_PENALTY",default="0.6"))
+        self.max_tokens = int(os.getenv("OPENAI_MAX_TOKENS",default="240"))
 
     def get_response(self):
         response = openai.Completion.create(
-        model = os.getenv("OPENAI_MODEL",default="text-davinci-003"), 
+        model = self.model, 
         prompt = self.prompt.generate_prompt(),
-        temperature = int(os.getenv("OPENAI_TEMPERATURE",default="0")),
-        frequency_penalty = int(os.getenv("OPENAI_FREQUENCY_PENALTY",default="0")),
-        presence_penalty = float(os.getenv("OPENAI_PRESENCE_PENALTY",default="0.6")),
-        max_tokens = int(os.getenv("OPENAI_MAX_TOKENS",default="240"))
+        temperature = self.temperature,
+        frequency_penalty = self.frequency_penalty,
+        presence_penalty = self.presence_penalty,
+        max_tokens = self.max_tokens
         )
         return response['choices'][0]['text'].strip()