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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def format_sizeof(num, suffix='bytes'):
    '''Readable size format, courtesy of Sridhar Ratnakumar'''
    for unit in ['','K','M','G','T','P','E','Z']:
        if abs(num) < 1000.0:
            return "%3.1f%s%s" % (num, unit, suffix)
        num /= 1000.0
    return "%.1f%s%s" % (num, 'Y', suffix)