input: Write a function to create a Python function called add_marks which takes two parameters: marks(a list) and mark(an integer). The function should add the mark to each value in the marks list.
  
  def add_marks(marks, mark):
   return [m + mark for m in marks]
  
  assert add_marks([87, 56, 99, 54], 4)==[91, 60, 103, 58]
  assert add_marks([65, 72, 43], 5)==[70, 77, 48]
  assert add_marks([90, 85, 95], -2)==[88, 83, 93]
  assert add_marks([], 3)==[]
  assert add_marks([15, 20, 25, 30], 0)==[15, 20, 25, 30]
output: def add_marks(marks, mark):
   return [m + mark for m in marks]