import idlelib.tabbedpages as tbp
from tkinter import *

class CustomTabs(tbp.TabbedPageSet):
    def __init__(self, parent, page_names=None, page_class=tbp.TabbedPageSet.PageLift,
                 n_rows=1, max_tabs_per_row=5, expand_tabs=False, tabs=[]):
        
        super().__init__(parent, page_names=page_names, page_class=page_class,
                                         n_rows=n_rows, max_tabs_per_row=max_tabs_per_row, expand_tabs=expand_tabs)
        self._tab_set = tbp.TabSet(self, self.change_page, n_rows=n_rows,
                               max_tabs_per_row=max_tabs_per_row, tabs=tabs,
                               expand_tabs=expand_tabs)

if __name__ == '__main__':
    root=Tk()

    tabPage=CustomTabs(root, page_names=['Foobar','Baz'], tabs=["aaa"], n_rows=0,
                          expand_tabs=False,
                          )
    tabPage.pack(side=TOP, expand=TRUE, fill=BOTH)
    Label(tabPage.pages['Foobar'].frame, text='Foo', pady=20).pack()
    Label(tabPage.pages['Foobar'].frame, text='Bar', pady=20).pack()
    Label(tabPage.pages['Baz'].frame, text='Baz').pack()
    entryPgName=Entry(root)
    buttonAdd=Button(root, text='Add Page',
            command=lambda:tabPage.add_page(entryPgName.get()))
    buttonRemove=Button(root, text='Remove Page',
            command=lambda:tabPage.remove_page(entryPgName.get()))
    labelPgName=Label(root, text='name of page to add/remove:')
    buttonAdd.pack(padx=5, pady=5)
    buttonRemove.pack(padx=5, pady=5)
    labelPgName.pack(padx=5)
    entryPgName.pack(padx=5)
    root.mainloop()