如何在控制台中打印文本框中的文本？

Question

OK, So i just started learning how to code in python and I really like making gui with tkinter. I have run into a problem i just cannot fix. hopefully someone will be able to help.

import tkinter as tk
window = tk.Tk()

text_box = tk.Text()


text_box.pack()

window.geometry("700x500+50+60")

window.title('Welcome!')



label = tk.Label(
     text="Hello, Welcome to my first app!",
     foreground="white",
     background="black"
)

button = tk.Button(
        text="click me!",
        width="25",
        height="5"
)




button.pack()
label.pack()



window.mainloop()

so i just need to have whats in the textbox print into console when i press the button.

Answer 1

Use print(text_box.get(1.0, 'end-1c')) . The 1.0 means "line 1.character 0". The 'end-1c' means "end of Text minus 1 character". The entire thing encompasses the range you want to return (inclusively). You want to omit the last character because, Text widgets automatically have a newline character in them ~ unless you want that character in your print, then just use 'end' .

The below example is the OOP implementation of your app. It is heavily commented to give you direction.

import tkinter as tk


#extend root
class App(tk.Tk):
    #application constants
    WIDTH, HEIGHT, X, Y, TITLE = 700, 500, 50, 60, 'Welcome'

    #class constructor
    def __init__(self):
        #super()
        tk.Tk.__init__(self)

        #force this row and column to take up as much space as possible
        #affects textfield and welcome
        self.grid_columnconfigure(0, weight=1)
        self.grid_rowconfigure(0, weight=1)
        
        #same thing as your "text_box"
        self.textfield = tk.Text(self)
        self.textfield.grid(row=0, column=0, columnspan=2, sticky='nswe')
        
        #same thing as your "label" but given a more descriptive name
        self.welcome = tk.Label(self, text="Welcome to my first app!", fg="white", bg="black")
        self.welcome.grid(row=1, column=0, sticky='nswe')
        
        #same thing as your "button" but given a more descriptive name, and a purpose
        #note: width and height are in characters, not pixels ~ same for Label and Text
        self.print_btn = tk.Button(self, text="print", width=5, height=1, command=self.toConsole)
        self.print_btn.grid(row=1, column=1)
        
    def toConsole(self):
        #how to send text from a textfield to the console
        print(self.textfield.get(1.0, 'end-1c'))
        
        
#properly initialize your app
if __name__ == '__main__':
    app = App()
    app.title(App.TITLE)
    app.geometry(f'{App.WIDTH}x{App.HEIGHT}+{App.X}+{App.Y}')
    app.resizable(width=False, height=False)
    app.mainloop()