input: from typing import Dict
  import json
  
  
  def store_user_data(data: Dict[str, str]) -> None:
      """Stores given user data in a JSON file.
      >>> user_data = {"Name": "John", "Age": 25, "City": "New York"}
      >>> store_user_data(user_data)
      """
      with open('user_data.json', 'w') as f:
          json.dump(data, f)
  
  
  def get_user_data() -> Dict[str, str]:
      """Retrieves user data from a JSON file.
      >>> output = get_user_data()
      >>> print(output)
      {"Name": "John", "Age": 25, "City": "New York"}
      """
      with open('user_data.json') as f:
          return json.load(f)
output:     try:
          with open('user_data.json') as f:
              return json.load(f)
      except FileNotFoundError:
          return {}