1. import sys
  3. def stream_data_validation(data_stream, validation_function):
  4. """
  5. Streams data from a stream and validates each string.
  7. Args:
  8. data_stream: An iterable that yields strings.
  9. validation_function: A function that takes a string and returns
  10. True if it's valid, False otherwise.
  11. """
  12. for data_item in data_stream:
  13. try:
  14. # Validate the data item
  15. if validation_function(data_item):
  16. print(f"Valid: {data_item}") # Indicate valid data
  17. else:
  18. print(f"Invalid: {data_item}") # Indicate invalid data
  19. except Exception as e:
  20. print(f"Error validating {data_item}: {e}") #Handle validation errors
  24. if __name__ == '__main__':
  25. # Example usage:
  26. def is_valid_string(s):
  27. """Example validation function: checks if a string is not empty and contains only letters."""
  28. if not s:
  29. return False
  30. if not s.isalpha():
  31. return False
  32. return True
  34. # Simulate a data stream (e.g., reading from a file or network)
  35. data = ["hello", "world", "", "123", "python", "code"]
  36. data_stream = iter(data)
  38. stream_data_validation(data_stream, is_valid_string)

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