Update app.py

t-strings not yet avail on hf spaces

app.py

@@ -10,6 +10,7 @@ import whisper
 import gradio as gr
 import inspect
 import pandas as pd
+from string import Template
 
 # --- constants ---
 DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
@@ -97,7 +98,7 @@ class Agent:
         )
 
     def __call__(self, question_text, file_name) -> str:
-        template = t"""You are a highly precise question-answering agent.
+        template = Template("""You are a highly precise question-answering agent.
             When given a question:
             - If necessary, perform a web search using the tool `web_search` to find possible sources of information.
             - If the web search only returns titles and short snippets, you MUST visit the actual webpage using the `visit_webpage` tool to read the full content before answering.
@@ -119,7 +120,7 @@ class Agent:
             {question_text}
             -- end of question --
             If the questions mentions the need to use a file, use the following `file_name` value below as the `file_name` parameter in any function calls: 
-            file_name: {file_name}"""
+            file_name: {file_name}""")
         enhanced_question = template.substitute(question_text=question_text, file_name=file_name)
         response = self.agent.run(enhanced_question)
         return response