Where is objc? removed from appKit?

How can I import objc? Where is it?
ImportError: cannot import name ‘objc’ from ‘AppKit’

Can you show the code that fails.
The error message indicates that you did

from AppKit import objc

This is not how it works. Objc it its own module. Do this instead:

import objc
import vanilla
import os
import json
import textwrap
from AppKit import NSOpenPanel, NSFont, NSColor, NSEvent, NSMenu, NSMenuItem, NSApplication, objc
import GlyphsApp
import AppKit

That’s the beginning of the code

If I change it to this

import vanilla
import os
import json
import textwrap
from AppKit import NSOpenPanel, NSFont, NSColor, NSEvent, NSMenu, NSMenuItem, NSApplication
import GlyphsApp
import AppKit
import objc 

Do I need to install pyobjc?

Why pyobjc is not in glyphs plugin manager?

Pyobjc is preloaded in the python installation from Glyphs. So if you use the python from the Plugin Manager, you have it already. If you install your own version, you need to install needed modules yourself, too.