Decrement operator working as addition in Python

Question

I have recently started coding on python.. Today I came across a statement 10--2.. At first, I thought it might give an error but when I compiled the code the answer came out to be 12.. I don't have any clue how was this possible.. I have knowledge about increment and decrement operators but this doesn't make sense.. If anyone of you can describe the logic it will be of great help..

Python does not have a -- decrement operator. What you see is actually 10-(-2). — Klaus D.
– Klaus D., Commented Jul 7, 2018 at 8:05

Mufeed · Accepted Answer · 2018-07-07 08:25:43Z

2

There is no increment or decrement operators (i++, i--) in Python unlike some other languages(c, Java)

If you want to do increment you need to do something like i = i+1 or simply i += 1
Here what happens is Python treats 10--2 as 10 - (-2),

That is
10 - (-2) = 10 + 2 = 12

Similarly,
10-+2 = 10 - 2 = 8

You can even do

10++2 = 12
10-+2 = 8

edited Jul 7, 2018 at 8:25

answered Jul 7, 2018 at 8:05

Mufeed

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