Why doesn't my Tkinter button do something?

Question

so i made a button on my tkinter-field,witch would return an entry in an field,witch I built prior,thanks for that,anyway it doesn' return anything,here is a snippet of my source code

entry = Entry()
entry.pack()
def get_entry():
    entry.get()
schaltf2 = tkinter.Button(root, text="submit", width=20, command=get_entry())
schaltf2.pack(side="bottom")

could maybe anyone help me,that would be very nice,thank you!:)

You assign the result of a call to "get_entry" to "command" argument. Remove the parentheses to assign the function itself. — Michael Butscher, Jan 16 '22 at 13:24
*" it doesn' return anything"* because the function does not have a `return` statement. Even it returns something, it is discarded if it is called by a button click callback. — acw1668, Jan 16 '22 at 14:45

score 0 · Answer 1 · answered Jan 16 '22 at 13:28

this is because first you have to do a StringVar() object to get the value, so to initialize the entry you have to do:

string_var = tkinter.StringVar(root)
entry = tkinter.Entry(root, textvariable=string_var)

and in the function get_entry() you have to return entry.get() so you would do:

>>> def get_entry():
...    return entry.get()

Why doesn't my Tkinter button do something?

1 Answers1