python - How to get number of selected items in a listbox? -

i have listbox:

self.listbox = listbox(self.master,                        selectmode='multiple',                        height = 34,                        width = 38) self.listbox.grid(row = 3, column = 0, rowspan = 7, sticky = w) 

i don't know how number of selected items in listbox?

in c#, it's:

listview1.selecteditems.count 

how can in python?

i going assume you're asking listbox in tkinter not python built-in.

curselection()   

returns tuple containing line numbers of selected element or elements, counting 0. if nothing selected, returns empty tuple.