How do i use inputs from the keyboard?

Question

(My code is in python 3.4 the program, and not in sololearn)
I want to be able press a key on the keyboard, for example the up_arrow and add a value to a variable.
Something like this:
if up_arrow:
a+=1
print (a)
Does anyone know of a method or a package that can accomplish this?

Answer 1

for javascript u can do this:

if(key == 'a' || key == 'A'){
//code
}

u can also search for the internet for keycode values