def strsize (b):
    """Return human representation of bytes b. A negative number of bytes
    raises a value error."""
    if b < 0:
        raise ValueError("Invalid negative byte number")
    if b < 1024:
        return "%dB" % b
    if b < 1024 * 10:
        return "%dKB" % (b // 1024)
    if b < 1024 * 1024:
        return "%.2fKB" % (float(b) / 1024)
    if b < 1024 * 1024 * 10:
        return "%.2fMB" % (float(b) / (1024*1024))
    if b < 1024 * 1024 * 1024:
        return "%.1fMB" % (float(b) / (1024*1024))
    if b < 1024 * 1024 * 1024 * 10:
        return "%.2fGB" % (float(b) / (1024*1024*1024))
    return "%.1fGB" % (float(b) / (1024*1024*1024))
def strsize ( b ) : if b < 0 : raise ValueError ( "Invalid negative byte number" ) if b < 1024 : return "%dB" % b if b < 1024 * 10 : return "%dKB" % ( b // 1024 ) if b < 1024 * 1024 : return "%.2fKB" % ( float ( b ) / 1024 ) if b < 1024 * 1024 * 10 : return "%.2fMB" % ( float ( b ) / ( 1024 * 1024 ) ) if b < 1024 * 1024 * 1024 : return "%.1fMB" % ( float ( b ) / ( 1024 * 1024 ) ) if b < 1024 * 1024 * 1024 * 10 : return "%.2fGB" % ( float ( b ) / ( 1024 * 1024 * 1024 ) ) return "%.1fGB" % ( float ( b ) / ( 1024 * 1024 * 1024 ) )
Return human representation of bytes b. A negative number of bytes
    raises a value error.