Python negative modulus operation example

Example: 340%60 = 40, how did it come from?

340 – 60*5 = 40

340 – (The positive integer smaller than 340 that is divisible by 60) =. 40

**If it is negative: **

340 %60 = -340 – (The negative integer smaller than -340 that is divisible by 60) = -340 – (-360) = 20

As shown:

You can also think about it differently,

340 %60 = (the positive integer greater than 340 that is divisible by 60) – 340 = 360 – 340 = 20

For example:

1 %3 = 1

1 %3 = 2

Supplementary knowledge: the calculation method of calculating the remainder of negative numbers in python and the points of attention in exponentiation operation

The calculation method of calculating the remainder of negative numbers in python

1. Divide operation (after the result of division is calculated, round down)

Use the division operation //

1 // 203// 2110// 3310// -3-4

10 / 3 = 3.3333

Therefore: 10 // 3.33 is rounded down to 3 in 3

10 / -3 = -3.333

10 // -3 is rounded down to -3.33 to equal -4

*2. Find the remainder (use %) x% y is equivalent to x – (x // y)y

x% y is equivalent to x – (x // y)y

10 %-3-2-10%32

10 How is% -3 = -2 calculated?

x% y is equivalent to x – (x // y)y

10 // -3 = -4 has been calculated above

10 % -3 = 10 – (-4)(-3) = 10 – 12 = -2

10 % 3 = 2

10 % 3 = -10 – (-4)*3 = -10 + 12 = 2

One point to note in exponentiation

**3. Use **** for exponentiation

-3**2-9(-3)**29

The precedence of the exponentiation operator is higher than the negation (-).

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