PyGObject:单个按钮，一个操作用于左击，另一个操作用于右击？

import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk

button = Gtk.Button()

def on_left_click(widget):
    # 左击操作的代码逻辑
    pass

button.connect("clicked", on_left_click)

def on_right_click(widget, event):
    if event.button == 3:  # 右击事件的鼠标按钮代码为3
        # 右击操作的代码逻辑
        pass

button.connect("button-press-event", on_right_click)

import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk

def on_left_click(widget):
    # 左击操作的代码逻辑
    pass

def on_right_click(widget, event):
    if event.button == 3:  # 右击事件的鼠标按钮代码为3
        # 右击操作的代码逻辑
        pass

button = Gtk.Button()
button.connect("clicked", on_left_click)
button.connect("button-press-event", on_right_click)

window = Gtk.Window()
window.add(button)
window.show_all()
Gtk.main()