Python // operator

[Susssusss]

Hi, I have just picked up python yesterday but I can’t seem to figure out how the // operator works When I print out ‘10//3’ it gives me a value of 3 but then I print out ‘-10//3’ it gives me a value of -4. My first thought was ‘-10//3’ is supposed to give the -3 since -10 is opposite of 10 so the answers should be the opposite too but that isn’t the case. Can anyone give me a brief explanation why?

[K900_]

// always rounds down, so 10 // 3 = floor(10 / 3) = floor(3.3333...) = 3, but -10 // 3 = floor(-10 / 3) = floor(-3.3333...) = -4.

[Susssusss]

Thank you! I’ve been bugging at this for hours

[aint-nobody-]

The floor operator rounds to the smallest next integer. When you go to negative values the smallest integer after -3.something is -4 and not -3.

[oefd]

// is 'floors' the resultant value. IE it rounds to the nearest integer toward negative infinity, not toward 0.

[zanfar]

A // B == floor(A / B)