input: Write a function to rewrite the given Python code by introducing list comprehensions. The input code initializes an empty list and iterates through a range of numbers, appending even numbers to the list. The output should replace the original code with a list comprehension that achieves the same result.
  assert rewrite_code([i for i in range(1, 21) if i % 2 == 0])==[2, 4, 6, 8, 10, 12, 14, 16, 18, 20]
  assert rewrite_code([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])==[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
  assert rewrite_code([0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20])==[0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20]
  assert rewrite_code([])==[]
  assert rewrite_code([1, 3, 5, 7, 9, 11, 13, 15, 17, 19])==[1, 3, 5, 7, 9, 11, 13, 15, 17, 19]
output: def rewrite_code(lst):
      return [i for i in lst if i % 2 == 0]