input: Write a function to improve the given Python code for finding the sum of elements of a list. The original code iterates through the list and accumulates the sum in a variable. Suggest a more concise way to achieve the same result.
  assert sum_elements([1, 2, 3, 4, 5])==15
  assert sum_elements([0, 0, 0, 0])==0
  assert sum_elements([])==0
  assert sum_elements([-1, -2, -3, -4, -5])==-15
output: def sum_elements(lst):
      return sum(lst)