<?doc UL4 example for various operators?>

<?print a + b?>
<?print a - b?>
<?print a * b?>
<?print a / b?>
<?print a // b?>
<?print a % b?>
<?print a << b?>
<?print a >> b?>
<?print a & b?>
<?print a | b?>
<?print a ^ b?>
<?print a < b?>
<?print a > b?>
<?print a <= b?>
<?print a >= b?>
<?print a == b?>
<?print a != b?>
<?print (a)?>
<?print [a, b]?>
<?print {a, b}?>
<?print {a: b, c: d}?>
<?print a or b?>
<?print a and b?>
<?print [i for i in range(10) if i]?>
<?print a if b else c?>
<?print not a?>
<?print ~a?>
<?code a += b?>
<?code a -= b?>
<?code a *= b?>
<?code a /= b?>
<?code a //= b?>
<?code a %= b?>
<?code a <<= b?>
<?code a >>= b?>
<?code a &= b?>
<?code a |= b?>
<?code a ^= b?>