Python - Assign the value of an entry to a variable

Question

I tried to use the command mensagem = str(entry.get()) but it doesn’t work, I tried to use the entry = Entry(root, textvariable='mensagem') but also does not work, see the whole code basically want to type something in an entry and printar on the console..

from tkinter import *
mensagem = str
def enviar():
    mensagem = str(entry.get())
    print(mensagem)

root = Tk()

entry = Entry(root, textvariable=mensagem).place(x=10, y=10)
button = Button(root, text='ENVIAR', command=enviar).place(x=30, y=40)

root.mainloop() 

Answer 1

from tkinter import *

root = Tk()

mensagem = str

entry = Entry(root)
entry.pack()


def enviar():
    mensagem = str(entry.get())
    print(mensagem)


button = Button(root, text='ENVIAR', command=enviar)
button.pack()

root.mainloop()

Just add the . pack() and initialize the entry before function, so python can access this variable

http://effbot.org/tkinterbook/entry.htm

Answer 2

def enviar():
    texto = mensagem.get()
    print(texto)

When you use a variable associated with an Entry, you must make the calls to get and set for the variable. Kinter ("message") as the name of a local variable within the function, the first was not visible to Python - you would have the error that you were trying to access the local variable before assigning it.

Just use the global name "message" to avoid collisions with the local variable.