input: Write a function to create a Python dictionary with specified key-value pairs. The function should take two parameters: a key and a value, and return a dictionary with the specified pair.
  
  assert create_dictionary("FirstName", "John")=={"FirstName": "John"}
  assert create_dictionary("LastName", "Doe")=={"LastName": "Doe"}
  assert create_dictionary("Age", 30)=={"Age": 30}
  assert create_dictionary("Occupation", "Engineer")=={"Occupation": "Engineer"}
  assert create_dictionary("City", "New York")=={"City": "New York"}
output: def create_dictionary(key, value):
      return {key: value}