Non-decreasing list (using recursion)

Q. A list is a non-decreasing if each element is at least as big as the preceding one. For instance [], [7], [8,8,11] and [3,19,44,44,63,89] are non-decreasing, while [3,18,4] and [23,14,3,14,3,23] are not. Here is a recursive function to check if a list is non-decreasing. You have to fill in the missing argument for the recursive call.

 Ans-
def nondecreasing(l):
  if l==[] or len(l) == 1:
    return(True)
  else:
    return(l[0] <= l[1] and nondecreasing(l[1:]))

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