Question

I am writing a Tkinter program. The main class is MainFrame()

class MainFrame(Frame):

    def __init__(self, master=None):

        Frame.__init__(self, master)
        self.grid()

        # sets up the tab bar
        self.tabbar = TabBar(self, 'File Tabe Bar')
        self.tabs = []
        self.add_tab(self.tabbar, 'Hello Tab') # add a new tab to self.tabs
        self.tabbar.pack()  # make it visible

    def add_tab(self, parent, name='Default'):
        tab = Tab(parent, name)
        self.tabs.append(tab)

Will each of the tab variable created by invoking add_tab persist throughout the life time of the main frame (until it is destroyed)? Thanks.

Answer 1

Each variable is bind to an object Tab. Each Tab has a parent. The variable local to the function will be gone once the function exists – that is, the binding is lost, but you have the reference to the object Tab (each of them) in the list self.tabs which persist throughout the life time of the object MyFrame.

Each object Tab will live until the parent class (and / or the parents of the parent class) are destroyed (or by invoking a destroy method on Tab)

Just my wild guess ::(