def logo():
    """ Package logo in ascii art using fender font.

    Returns
    -------
    logo: str
        the package logo.
    """
    logo = """
'||'''|,          '||'''|,          
 ||   ||           ||   ||  ''   
 ||...|' '||  ||`  ||...|'  ||  '||''|, .|''|,
 ||       `|..||   ||       ||   ||  || ||..||
.||           ||  .||      .||.  ||..|' `|... 
           ,  |'                 ||            
            ''                  .||            """
    return logo
