modulo and order of operations

[freakbot]

I'm using 2.7.X
Working with the following:

1	print 100 - 25 * 3 % 4

When i run this i get 97 as the answer.

It seems like it I should be getting 6 with a 1 as remainder
-25 * 3 = -75
then 100-75 = 25
then 25/4=6 with 1 remainder

What is it that I'm missing in understanding this? Is there a page on the forum I have missed in my search that will explain this?
Thank you for any assistance

[Hellerick]

25 * 3 = 75
75 % 4 = 3
100 - 3 = 97

Modulo has the same rank as * and /, so those operations are executed from left to right. And + or - go after them.

[Mekire]

This page shows the precedence of all operations:
https://docs.python.org/2/reference/expr...precedence

Multiplication and modulo have the same precedence, so they are done in the order they are listed.
Subtraction of course has lower precedence so it is done last.

1 2 3 4 5 6 7 8 9 10

>>> 25 * 3 75 >>> 75 % 4 3 >>> 100 - 3 97 >>> 25 * 3 % 4 3 >>> 100 - 25 * 3 % 4 97

[freakbot]

Awesome, Thank you.
Knowing the order solves the issue

[nilamo]

When there's so many things going on, you should probably either use parentheses, or split the operation over several lines. For those of us who don't have any desire to remember that modulus is the same order of precedence as division.