input: 
  from faker import Faker
  
  def generate_sample_data() -> None:
      """ Generate sample data for a web application using Python's faker library.
      The output contains three columns of data: name, email, and age.
      >>> generate_sample_data()
      John Doe johndoe@example.com 28
      Jane Smith janesmith@example.com 34
      ...
      (9 additional lines of sample data output)
      """
      fake = Faker()
      for _ in range(10):
          print(fake.name(), fake.email(), fake.random_int(min=18, max=60))
  
output:     fake = Faker()
      for _ in range(10):
          print(fake.name(), fake.email(), fake.random_int(min=18, max=60))