Create app.py

app.py

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+import requests
+import os
+import gradio as gr
+
+def fetch_exchange_rates():
+    """
+    Fetches the latest exchange rates from the ExchangeRate API.
+    """
+    API_KEY = os.getenv('EXCHANGE_RATE_API_KEY')  # Get API key from environment variable
+    if not API_KEY:
+        return None, "❌ API key is missing. Please set it in the environment variable 'EXCHANGE_RATE_API_KEY'."
+    url = f"https://v6.exchangerate-api.com/v6/{API_KEY}/latest/USD"
+    try:
+        response = requests.get(url)
+        response.raise_for_status()  # Raise an exception for HTTP errors
+        data = response.json()
+    except requests.RequestException as e:
+        return None, f"❌ Error fetching data from API: {e}"
+
+    if data.get('result') != 'success':
+        return None, "❌ Failed to fetch exchange rates. Check your API key or account limits."
+
+    return data.get('conversion_rates'), None
+
+
+def convert_currency(amount, input_currency, output_currency):
+    """
+    Converts the given amount from one currency to another using exchange rates.
+    """
+    exchange_rates, error = fetch_exchange_rates()
+
+    if error:
+        return error
+
+    if input_currency not in exchange_rates or output_currency not in exchange_rates:
+        return "❌ Invalid currency. Please ensure the currency codes are valid."
+
+    # Perform the conversion
+    input_rate = exchange_rates[input_currency]
+    output_rate = exchange_rates[output_currency]
+    converted_amount = amount * (output_rate / input_rate)
+    rounded_amount = round(converted_amount, 2)
+
+    return f"{amount} {input_currency} is equal to {rounded_amount} {output_currency}."
+
+
+# Gradio Interface
+def interface(amount, input_currency, output_currency):
+    try:
+        amount = float(amount)
+        if amount <= 0:
+            return "❌ Amount must be greater than 0."
+    except ValueError:
+        return "❌ Invalid input. Please enter a valid number."
+
+    return convert_currency(amount, input_currency.upper(), output_currency.upper())
+
+
+# Create Gradio app
+with gr.Blocks() as app:
+    gr.Markdown("## 🌍 Currency Converter using Live API")
+    gr.Markdown(
+        "Convert currencies using live exchange rates. Enter the amount, "
+        "source currency (e.g., USD), and target currency (e.g., PKR)."
+    )
+
+    with gr.Row():
+        amount_input = gr.Textbox(label="Amount", placeholder="Enter amount (e.g., 100)")
+        input_currency_input = gr.Textbox(label="From Currency", placeholder="Enter source currency code (e.g., USD)")
+        output_currency_input = gr.Textbox(label="To Currency", placeholder="Enter target currency code (e.g., PKR)")
+
+    convert_button = gr.Button("Convert")
+    result_output = gr.Textbox(label="Result", placeholder="Result will appear here", interactive=False)
+
+    convert_button.click(
+        interface,
+        inputs=[amount_input, input_currency_input, output_currency_input],
+        outputs=result_output,
+    )
+
+# Launch the Gradio app
+if __name__ == "__main__":
+    app.launch()