How to recalculate heights in avl tree?

Question

Python

When adding a new node, I calculate the heights like this:

def setHg(self,current):
      current.height += 1
      if(current.parent != None):
         self.setHg(current.parent)

After the turn, I do not know how to correctly recalculate the height.
for example

(root: 1, height: 3) -> (2, h: 2) -> (3, h: 1)

twisted

(1, h: 3) <- (root : 2, h: 2) -> (3, h: 1)

Stuck on this. Help me please.

Answer 1

So recalculate the height on each type of turn separately.
Using the small left example from the wiki:
The height of a is now max(L, C) + 1, where max is the height.
Height b - max(a, R)