视觉工作室代码 - python - tkinter

Question

import tkinter 
canvas = tkinter.Canvas()

canvas.pack()
tkinter.mainloop()
canvas.create_text(150, 100, text = "HELLO")

Hello.

Sorry for my English. Start in Python. Canvas is on screen, but NO text What is wrong? Thanks.

Answer 1

Your code isn't executed. You call tkinter.mainloop(), which basically stops execution of all code after it. Here, replace it with this instead:

import tkinter 
canvas = tkinter.Canvas()

canvas.pack()
canvas.create_text(150, 100, text = "HELLO")
tkinter.mainloop()

Make sure "tkinter.mainloop()" comes after the code, so it executes.

I hope this helps. Happy coding!

Answer 2

Simply because you use .mainloop() before creating your text. Put your create_text line just under the one where you create the canvas and it works.

Answer 3

I guess this is what You were looking for:

from tkinter import Tk, Canvas


root = Tk()

canvas = Canvas(root)
canvas.pack()

canvas.create_text(150, 100, text='Hello')

root.mainloop()

Tho looking at Your code I would say You have to take a look at some basic python tutorials as well as some tkinter tutorials. You really need them! For example this about tkinter

Answer 4

The problem occurs because you are using root.mainloop this means that everything before it runs but everything after the root.mainloop runs when you close the program.

So if you want to see the text on the canvas do this:

from tkinter import *

root = Tk()

canvas = Canvas(root)
canvas.pack()
canvas.create_text(150, 100, text = "HELLO")

root.mainloop()