Having trouble with Entry variables in tkinter Python

Question

from tkinter import *

root = Tk()
root.geometry("800x650")
e = Entry(root, width=3, font=('Verdana', 30), justify='right')

a = b = c = e

a.place(relx=0.2, rely=0.5, anchor=CENTER)
b.place(relx=0.44, rely=0.5, anchor=CENTER)
c.place(relx=0.65, rely=0.5, anchor=CENTER)
root.mainloop()

Why can't I see all three entries, where are they?

But when I do this:

a = Entry(root, width=3, font=('Verdana', 30), justify='right')
b = Entry(root, width=3, font=('Verdana', 30), justify='right')
c = Entry(root, width=3, font=('Verdana', 30), justify='right')

it works...

Yeah, You will have to explain harder than that because I don't understand what the problem is in my code. I understand your answer perfectly but I still don't understand what exactly is wrong in my code. Thanks. — Chris
– Chris, Commented Oct 2, 2018 at 10:33

score 2 · Accepted Answer · 2018-10-02 09:42:48Z

2

Try to make "e" a class instead, and declare your boxes individually, a = b = e gives about the same result than what you tried.

root = Tk()
root.geometry("800x650")

class MyEntry(Entry):
    def __init__(self, master=root):
        Entry.__init__(self, master=root)

        self.configure(width = 3, 
            font = ('Verdana', 30),
            justify = 'right')

a = MyEntry()
b = MyEntry()
c = MyEntry()

a.place(relx=0.2, rely=0.5, anchor=CENTER)
b.place(relx=0.44, rely=0.5, anchor=CENTER)
c.place(relx=0.65, rely=0.5, anchor=CENTER)
root.mainloop()

edited Oct 2, 2018 at 9:42

answered Oct 2, 2018 at 9:34

user7744776

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Comments

Bryan Oakley · Accepted Answer · 2018-10-02 11:58:27Z

1

Why can't I see all three entries, where are they?

You can't see three entries because you didn't create three entries. When you do a = b = c = e, you are assigning three new names to the same object that e refers to, you aren't creating new widgets. a, b, c, and e all refer to the same object in memory.

answered Oct 2, 2018 at 11:58

Bryan Oakley

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