input: from faker import Faker
  
  def generate_sample_data():
      """ Generates 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()
      """
      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))