Update app.py

app.py

@@ -20,12 +20,12 @@ def get_exchange_rate(from_currency: str, to_currency: str) -> float:
         float: The exchange rate from the source currency to the target currency
     """
     try:
-        api_url = f"https://open.er-api.com/v6/latest/{to_currency}"
+        api_url = f"https://open.er-api.com/v6/latest/{from_currency}"
         response = requests.get(api_url)
         
         if response.status_code == 200:
             data = response.json()
-            return data['rates'][from_currency]
+            return data['rates'][to_currency]
         else:
             return f"Error: Unable to fetch exchange rate. Status code: {response.status_code}"