Add a factorial endpoint that uses math.factorial.

docs/voice.md

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+
+> Aider v0.11.2-dev  
+> Model: gpt-4  
+> Git repo: .git  
+> Repo-map: universal-ctags using 1024 tokens  
+> Added app.py to the chat.  
+> Use /help to see in-chat commands, run with --help to see cmd line args  
+
+#### /voice  
+
+> Recording... Press ENTER when done speaking...  
+
+#### Add a factorial endpoint that uses math.factorial.  
+
+To add a factorial endpoint to the Flask application, we need to modify the `app.py` file. 
+
+Here are the steps:
+
+1. Import the `factorial` function from the `math` module at the top of the file.
+2. Add a new route `/fact/<int:x>` to the Flask application.
+3. In the function for this route, call `math.factorial(x)` and return the result as a string.
+
+Here is the *edit block* for these changes:
+
+```python
+app.py
+<<<<<<< HEAD
+if __name__ == '__main__':
+    print("Starting...")
+    app.run()
+=======
+@app.route('/fact/<int:x>')
+def factorial(x):
+    result = math.factorial(x)
+    return str(result)
+
+if __name__ == '__main__':
+    print("Starting...")
+    app.run()
+>>>>>>> updated
+```
+
+> Applied edit to app.py  
+> Commit ef9e3e7 aider: Add a factorial endpoint that uses math.factorial.