input: Write a python function to set a value in a dictionary with a specific key.
  assert set_dict_value({'Java': 20}, 'Python', 10) == {'Java': 20, 'Python': 10}
  assert set_dict_value({}, 'Python', 10) == {'Python': 10}
  assert set_dict_value({'Python': 5}, 'Python', 10) == {'Python': 10}
output: def set_dict_value(d, key, value):
      d[key] = value
      return d