In python can anyone help me to implement function in this.

def skip(s,n): """ Returns a copy of s, only including positions that are multiples of n A position is a multiple of n if pos % n == 0. Examples: skip('hello world',1) returns 'hello world' skip('hello world',2) returns 'hlowrd' skip('hello world',3) returns 'hlwl' skip('hello world',4) returns 'hor' Parameter s: the string to copy Precondition: s is a nonempty string Parameter n: the letter positions to accept Precondition: n is an int > 0 """ # You must use a while-loop, not a for-loop first = "" second = "" while pos < range(len(s)): if pos % n == 0: first = first + s[pos] else: second = second + s[pos] return first

def fixed_points(tup): """ Returns a copy of tup, including only the "fixed points". A fixed point of a tuple is an element that is equal to its position in the tuple. For example 0 and 2 are fixed points of (0,3,2). The fixed points are returned in the order that they appear in the tuple. Examples: fixed_points((0,3,2)) returns (0,2) fixed_points((0,1,2)) returns (0,1,2) fixed_points((2,1,0)) returns () Parameter tup: the tuple to copy Precondition: tup is a tuple of ints """ # You must use a while-loop, not a for-loop