python 3.x - How to add columns to a tkinter.Listbox? -

i trying add these panda columns listbox, read this:

new zealand nzd united states usd 

etc.

i using pandas data .csv, when try , use loop add items list box using insert error

nameerror: name 'end' not defined or nameerror: name 'end' not defined

using code:

def printcsv():     csv_file = ('testcur.csv')      df = pd.read_csv(csv_file)      print (df[['country','code']])  your_list = (df[['country','code']]) item in your_list:         listbox.insert(end, item) 

you turn csv file dictionary, use combined country , currency codes keys , codes values, , insert keys listbox. code of current selection, can this: currencies[listbox.selection_get()].

listbox.selection_get() returns key use currency code in currencies dict.

import csv import tkinter tk  root = tk.tk()  currencies = {}  open('testcur.csv') f:     next(f, none)  # skip header.     reader = csv.reader(f, delimiter=',')     country, code in reader:         currencies[f'{country} {code}'] = code  listbox = tk.listbox(root) key in currencies:     listbox.insert('end', key) listbox.grid(row=0, column=0) listbox.bind('<key-return>', lambda event: print(currencies[listbox.selection_get()]))  tk.mainloop()