input: Write a function that suggests an improvement for the provided Python code to find the sum of elements of a list. The improved function should be concise and efficient.
  assert sum_elements([1, 2, 3, 4])==10
  assert sum_elements([5, 5, 5, 5])==20
  assert sum_elements([0, 0, 0, 0])==0
  assert sum_elements([])==0
output: def sum_elements(lst):
      return sum(lst)