input: Write a function to generate sample data for a web application using Python's faker library. The output should contain three columns of data: name, email, and age.
  from faker import Faker
  
  def generate_sample_data(num_entries):
      fake = Faker()
      data = []
      for _ in range(num_entries):
          data.append((fake.name(), fake.email(), fake.random_int(min=18, max=60)))
      return data
  
  assert generate_sample_data(3) == [('Marcia Vargas', 'reillyjayde@example.com', 45), ('Michelle Shaffer', 'usmall@example.org', 55), ('Andrew Rodriguez', 'sopatel@example.net', 34)]
  assert generate_sample_data(0) == []
output: from faker import Faker
  
  def generate_sample_data(num_entries):
      fake = Faker()
      data = []
      for _ in range(num_entries):
          data.append((fake.name(), fake.email(), fake.random_int(min=18, max=60)))
      return data