I used google Gemini to build a cryptocurrency price tracker. The Python script gemini_price_tracker.py fetches and displays the current price of a cryptocurrency from the Gemini exchange using the Gemini Public API.

Here’s a breakdown of how it works:

1. Imports the requests library:

   import requests

   This allows the script to send HTTP requests to web servers and fetch data. In this case, it fetches data from the Gemini API.

2. Defines a function to fetch cryptocurrency price:

   def get_crypto_price(symbol: str):

   This function takes a cryptocurrency symbol (e.g., btcusd, ethusd) and fetches the current price from the Gemini API.

3. Builds the URL to call the Gemini API:

   url = f"https://api.gemini.com/v1/pubticker/{symbol}"

   The URL is dynamically built using the symbol provided by the user (e.g., btcusd or ethusd).

4. Sends a request to Gemini API:

   response = requests.get(url)

   It sends a GET request to the Gemini API for the given cryptocurrency symbol.

5. Handles the API Response:

   • If the response is successful, it extracts and displays the current price of the cryptocurrency.
   • If there's an error (e.g., invalid symbol or network issue), it displays an error message.

   price = data['last']
   return f"The current price of {symbol.upper()} is ${price}."

6. Main Program Logic:

   if __name__ == "__main__":

   This part of the script is executed when you run the script directly. It continuously asks the user to input a cryptocurrency symbol (like btcusd) and then calls the get_crypto_price() function to fetch and display the price.

   The program loops and keeps asking for new symbols until the user types "exit" to quit.

1. Example Execution: When you run the script, you’ll see a prompt asking for a cryptocurrency symbol, for example:

   Welcome to the Gemini Crypto Price Tracker!
   Enter the cryptocurrency symbol (e.g., btcusd, ethusd) or 'exit' to quit.
   Enter symbol: btcusd
   The current price of BTCUSD is $35000.

2. When You Exit: The program will keep asking for cryptocurrency symbols and showing their prices. If you enter exit, the program will print:

   Goodbye!

• Purpose: The script fetches real-time cryptocurrency prices from Gemini’s public API and displays them.
• How it works: By sending a GET request to Gemini’s public ticker endpoint, it retrieves the latest price data for the given symbol.

Let me know if you need further explanation or if you want to extend the functionality of this script!