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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()
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