Update app.py

app.py

@@ -15,6 +15,9 @@ from datetime import datetime  # Import datetime for timestamp
 # Load environment variables
 load_dotenv()
 
+# Initialize API key status message globally
+initial_api_key_status_message = "Checking API Key..."
+
 # Function to read questions from JSON
 def read_questions_from_json(file_path):
     if not os.path.exists(file_path):
@@ -41,8 +44,12 @@ def save_interview_history(history, filename="interview_history.json"):
 # Function to convert text to speech (OpenAI's TTS usage, adjust if needed)
 def convert_text_to_speech(text):
     start_time = time.time()
+    api_key = os.getenv("OPENAI_API_KEY")
+    if not api_key:
+        print("API key is missing, cannot perform text-to-speech.")
+        return None
     try:
-        client = OpenAI(api_key=os.getenv("OPENAI_API_KEY"))
+        client = OpenAI(api_key=api_key)
         response = client.audio.speech.create(model="tts-1", voice="alloy", input=text)
 
         with tempfile.NamedTemporaryFile(delete=False, suffix=".mp3") as tmp_file:
@@ -60,8 +67,12 @@ def convert_text_to_speech(text):
 # Function to transcribe audio (OpenAI Whisper usage, adjust if needed)
 def transcribe_audio(audio_file_path):
     start_time = time.time()
+    api_key = os.getenv("OPENAI_API_KEY")
+    if not api_key:
+        print("API key is missing, cannot perform audio transcription.")
+        return None
     try:
-        client = OpenAI(api_key=os.getenv("OPENAI_API_KEY"))
+        client = OpenAI(api_key=api_key)
         with open(audio_file_path, "rb") as audio_file:
             transcription = client.audio.transcriptions.create(model="whisper-1", file=audio_file)
         print(f"DEBUG - Audio transcription time: {time.time() - start_time:.2f} seconds")
@@ -322,7 +333,7 @@ def main():
         print(f"Error reading questions: {e}")
         return
 
-    global initial_api_key_status_message # Declare as global to modify
+    global initial_api_key_status_message # Access and set the global variable
     initial_api_key_status_message = check_api_key() # Check API key and update status
 
     interview_func, initial_message, final_message = conduct_interview(questions) # Initialize even if API key is missing
@@ -545,7 +556,7 @@ def main():
             Must return a list of {'role':'assistant','content':'...'} messages
             plus empty text for user_input and path for audio_output.
             """
-            global interview_func, questions, initial_api_key_status_message # Access global variables
+            global interview_func, questions, initial_api_key_status_message # Access global variables, use global not nonlocal here
 
             current_api_key_status = check_api_key() # Check API key status right before starting interview
             if not current_api_key_status.startswith("✅"): # If API key is not valid
@@ -600,7 +611,7 @@ def main():
             Re-initialize the interview function entirely
             to start from scratch, clearing the Chatbot.
             """
-            global interview_func, initial_message, final_message, questions # Access global variables
+            global interview_func, initial_message, final_message, questions # Access global variables, use global not nonlocal here
             interview_func, initial_msg, final_msg = conduct_interview(questions) # Re-init with current questions
             return [], "", None