Operators and precedence

Arithmetic operators (floor division, modulo, power), comparison and logical operators, the order in which an expression is evaluated (precedence, associativity) and the short-circuit evaluation of logical operators.

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Operator precedence: what is it?
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The rule that says which operator is applied first when an expression mixes several without parentheses.
2 + 3 * 4 is 14: * goes before +. Parentheses always win: (2 + 3) * 4 is 20.
What does this statement print?

```python
print(2 3 2)
`
- 512
- 64
- 36
- 12
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512
** is right-associative: 3 ** 2 is computed first (9), then 2 ** 9 gives 512. Going left to right, (2 ** 3) ** 2, would give 64.
In a + 2, a and 2 are the … of the + operator. A … operator takes a single operand, like not or the minus of -x; a binary operator takes two.
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In a + 2, a and 2 are the operands of the + operator. A unary operator takes a single operand, like not or the minus of -x; a binary operator takes two.
The same sign can play both parts: - is binary in a - b and unary in -b.

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