Just solved all HackerRank Python challenges on Closures and Decorators!

def wrapper(f):
    def fun(l):
        f(["+91 "+ c[-10:-5]+" " + c[-5:] for c in l])
    return fun

@wrapper
def sort_phone(l):
    print(*sorted(l), sep='\n')

if __name__ == '__main__':
    l = [input() for _ in range(int(input()))]
    sort_phone(l)