input: Write a function to rewrite the given Python code using list comprehensions. The original code collects even numbers between 1 and 20 into a list by iterating through a range and checking the condition where the number is even. Use list comprehension to achieve the same result.
  
  assert even_numbers_comprehension() == [2, 4, 6, 8, 10, 12, 14, 16, 18, 20]
output: def even_numbers_comprehension():
      return [num for num in range(1, 21) if num % 2 == 0]