1. import json
  3. def flatten_json(json_obj, sep='_', prefix=''):
  4. """
  5. Flattens a JSON object into a single dictionary.
  7. Args:
  8. json_obj (dict): The JSON object to flatten.
  9. sep (str): Separator for keys (default: '_').
  10. prefix (str): Prefix for keys (default: '').
  12. Returns:
  13. dict: A flattened dictionary.
  14. """
  15. flattened = {}
  16. for k, v in json_obj.items():
  17. new_key = prefix + sep + k if prefix else k
  18. if isinstance(v, dict):
  19. flattened.update(flatten_json(v, sep=sep, prefix=new_key))
  20. elif isinstance(v, list):
  21. for i, item in enumerate(v):
  22. if isinstance(item, dict):
  23. flattened.update(flatten_json(item, sep=sep, prefix=new_key + sep + str(i)))
  24. else:
  25. flattened[new_key + sep + str(i)] = item
  26. else:
  27. flattened[new_key] = v
  28. return flattened
  30. if __name__ == '__main__':
  31. # Example Usage
  32. json_data = {
  33. "name": "John Doe",
  34. "age": 30,
  35. "address": {
  36. "street": "123 Main St",
  37. "city": "Anytown",
  38. "zip": "12345"
  39. },
  40. "phoneNumbers": [
  41. {"type": "home", "number": "555-1234"},
  42. {"type": "work", "number": "555-5678"}
  43. ]
  44. }
  46. flattened_data = flatten_json(json_data)
  47. print(json.dumps(flattened_data, indent=4))

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