Treeview ttk How to change the values ​​of a single cell or row?

Question

Python

I found a wonderful code that allows you to display an array in Excel - a style table, and even sorting is a bonus. But I just can’t find on the Internet how to edit the content (values) of an already filled table. Better address cell (element). If not possible, at least a line. Thank you!
Spoiler code. Starting up.

There seems to be some description here, but something didn't help me...
https://docs.python.org/3/library/tkinter.ttk.html#id8

spoiler

import tkinter as tk
import tkinter.font as tkFont
import tkinter.ttk as ttk

class MultiColumnListbox(object):

    def __init__(self):
        self.tree = None
        self._setup_widgets()
        self._build_tree()

    def _setup_widgets(self):
        msg = ttk.Label(wraplength="4i", justify="left", anchor="n", padding=(10, 2, 10, 6), text='Текст')
        msg.pack(fill='x')
        container = ttk.Frame()
        container.pack(fill='both', expand=True)
        self.tree = ttk.Treeview(columns=car_header, show="headings")
        vsb = ttk.Scrollbar(orient="vertical",
            command=self.tree.yview)
        hsb = ttk.Scrollbar(orient="horizontal",
            command=self.tree.xview)
        self.tree.configure(yscrollcommand=vsb.set,
            xscrollcommand=hsb.set)
        self.tree.grid(column=0, row=0, sticky='nsew', in_=container)
        vsb.grid(column=1, row=0, sticky='ns', in_=container)
        hsb.grid(column=0, row=1, sticky='ew', in_=container)
        container.grid_columnconfigure(0, weight=1)
        container.grid_rowconfigure(0, weight=1)

    def _build_tree(self):
        for col in car_header:
            self.tree.heading(col, text=col.title(),
                command=lambda c=col: sortby(self.tree, c, 0))
            self.tree.column(col,
                width=tkFont.Font().measure(col.title()))

        for item in car_list:
            self.tree.insert('', 'end', values=item)
            for ix, val in enumerate(item):
                col_w = tkFont.Font().measure(val)
                if self.tree.column(car_header[ix],width=None)<col_w:
                    self.tree.column(car_header[ix], width=col_w)

def sortby(tree, col, descending):
    data = [(tree.set(child, col), child) \
        for child in tree.get_children('')]
    data.sort(reverse=descending)
    for ix, item in enumerate(data):
        tree.move(item[1], '', ix)
    tree.heading(col, command=lambda col=col: sortby(tree, col, \
        int(not descending)))



car_header = ['car', 'rep', 'repair']
car_list = [
('Hyundai', 'brakes', 'brakes') ,
('Honda', 'light', 'brakes') ,
('Lexus', 'battery', 'brakes') ,
('Benz', 'wiper', 'brakes') ,
('Ford', 'tire', 'brakes') ,
('Chevy', 'air', 'brakes') ,
('Chrysler', 'piston', 'brakes') ,
('Toyota', 'brake pedal', 'brakes') ,
('BMW', 'seat', 'brakes')
]


if __name__ == '__main__':
    root = tk.Tk()
    root.title("Multicolumn Treeview/Listbox")
    listbox = MultiColumnListbox()
    root.mainloop()