def larg_nnum(list1,n):
 import heapq
 
 largest=heapq.nlargest(n,list1)
 return largest
def larg_nnum(list1, n):
    _i_3 = 0
    if _i_3 < _i_3:
        import heapq
    import heapq
   
    largest = heapq.nlargest(n, list1)
    return largest