1. import requests
  2. import time
  3. from typing import Union
  5. def retry_request(url: str, max_retries: int = 3, delay: int = 1):
  6. """
  7. Retries an HTTP request with exponential backoff.
  9. Args:
  10. url: The URL to request.
  11. max_retries: The maximum number of retries.
  12. delay: The initial delay in seconds between retries.
  14. Returns:
  15. The response object if successful, None otherwise.
  16. """
  17. for attempt in range(max_retries):
  18. try:
  19. response = requests.get(url) # Make the request
  20. response.raise_for_status() # Raise HTTPError for bad responses (4xx or 5xx)
  21. return response # Return the response if successful
  22. except requests.exceptions.RequestException as e:
  23. if attempt == max_retries - 1:
  24. print(f"Request failed after {max_retries} attempts: {e}")
  25. return None # Return None if all retries fail
  26. else:
  27. print(f"Request failed, retry {attempt + 1}/{max_retries}. Error: {e}")
  28. time.sleep(delay * (2 ** attempt)) # Exponential backoff
  29. return None # Should not reach here, but included for completeness
  32. if __name__ == '__main__':
  33. # Example usage
  34. url = "https://httpstat.us/500" # Example URL that returns a 500 error
  35. response = retry_request(url)
  37. if response:
  38. print("Request successful!")
  39. print(response.status_code)
  40. #print(response.text) # Uncomment to print the response content
  41. else:
  42. print("Request failed after multiple retries.")

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