def unique(input_list):
    """Return unique value of the input list"""  
    try:
        # intilize a null list 
        unique_list = [] 
        # traverse for all elements 
        for x in input_list: 
            # check if exists in unique_list or not 
            if x not in unique_list: 
                unique_list.append(x)
        return(unique_list)
    except TypeError as detail:
        return ("int object is not iterable")