input: Write a function to convert a for-loop based even number collection into a list comprehension format. The function should take no input and return a list of even numbers from 1 to 20. If the list comprehension is correctly implemented, it should return the same output as the original for-loop approach.
  
  assert convert_to_list_comprehension() == [2, 4, 6, 8, 10, 12, 14, 16, 18, 20]
output: def convert_to_list_comprehension():
      return [i for i in range(1, 21) if i % 2 == 0]