input: Write a python function to fetch users from an API and print them.
  assert fetch_and_print_users('https://api.example.com/users', 'YOUR_API_TOKEN')==['user1', 'user2', 'user3']
  assert fetch_and_print_users('https://api.example.com/users', 'ANOTHER_API_TOKEN')==['user4', 'user5']
  assert fetch_and_print_users('https://api.example.com/users', 'DIFFERENT_API_TOKEN')==['user6', 'user7', 'user8']
output: import requests
  
  def fetch_and_print_users(api_url, api_token):
      headers = {
          'Authorization': f'Bearer {api_token}'
      }
      response = requests.get(api_url, headers=headers)
      response.raise_for_status()
      users = response.json()
      print(users)
      return users