如何使用Nodered的Tkinter运行python GUI

Question

When i try to run a python file using EXEC from node red, it does work as long as it does not contain any GUI like tkinter. the error on node red side when i try to execute is: _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, sync, use) _tkinter.TclError: no display name and no $DISPLAY environment variable

This is my Python file code

from tkinter import *

root = Tk()

l = Label(text="Hello world", font=("Helvetica",20))

l.pack()

Answer 1

add

mainloop( )

to the end of the python file and it should display the form.