Highlight text when clicked in tkinter

I modified your example to have the lines highlight. How to highlight a line is explained here. Basicly I added a text_click_callback that check which line is clicked and highlight it and calls vlc. I changed the input folder, to be able to execute the code, as I dont have any video files to work with.

import subprocess,osfrom Tkinter import *def text_click_callback(event):    # an event to highlight a line when single click is done    line_no = event.widget.index("@%s,%s linestart" % (event.x, event.y))    #print(line_no)    line_end = event.widget.index("%s lineend" % line_no)    event.widget.tag_remove("highlight", 1.0, "end")    event.widget.tag_add("highlight", line_no, line_end)    event.widget.tag_configure("highlight", background="yellow")def viewFile():    tex.delete('1.0', END)    for f in os.listdir(path):        #if f.endswith('.h264'):        linkname="link-" + f        tex.insert(END,f + "\n", linkname)        tex.tag_configure(linkname, foreground="blue", underline=True)        tex.tag_bind(linkname, "<Button-1>", text_click_callback )    # highlight a line        tex.tag_bind(linkname, "<Double-Button-1>", lambda event, filename =path+'/'+f: subprocess.call(['vlc',filename]) )    # Video play on VLC Playerif __name__ == '__main__':    root = Tk()    #step= root.attributes('-fullscreen', True)    step = LabelFrame(root,text="FILE MANAGER", font = "Arial 20 bold   italic")    step.grid(row=1, columnspan=7, sticky='W',padx=100, pady=5, ipadx=130, ipady=25)    Button(step,    text="ViewFile",        font = "Arial 8 bold    italic",    activebackground="turquoise",   width=30, height=5, command=viewFile).grid      (row= 6, column =3)    Button(step,    text="Exit",            font = "Arial 8 bold    italic",    activebackground="turquoise",   width=20, height=5, command=root.quit).grid     (row= 6, column =5)    tex = Text(master=root)                                      # TextBox For Displaying File Information    scr=Scrollbar(root,orient =VERTICAL,command=tex.yview)    scr.grid(row=8, column=2, rowspan=15, columnspan=1, sticky=NS)    tex.grid(row=8, column=1, sticky=E)    tex.config(yscrollcommand=scr.set,font=('Arial', 8, 'bold', 'italic'))    global process    path = os.path.expanduser("/tmp")                   # Define path To play, delete, or rename video    root.mainloop()

How it works is shown below:

But I think Bryan Oakley is right. A listbox would be better for this. Nevertheless, if you want to keep using Text, you can do as in the example provided.