AttributeError: 'mainscreen' object has no attribute 'attributes'

Question

could you please lead me to a solution, I can't fix this on my own.

I get an AttributeError: 'mainscreen' object has no attribute 'attributes' when I press the button to toggle to fullscreen. thx for your help

#!/bin/python3

import tkinter
import grovepi
import math
import time
from tkinter import Tk, Label, Button

class mainscreen:
    def __init__(self,master):
    self.master = master
    master.title ("Temperature")
    master.geometry("800x480")
    master.attributes("-fullscreen", False)
    self.state = False

    sensorTH1 = 4
    sensorTH2 = 3
    temp1=0
    temp2=0


    #column0 and 1
    self.labeltemp11 = tkinter.Label (master, text="Temp inside", fg="black", font="72")
    self.labeltemp11.grid(row=1, column=0 ,sticky="sw")
    self.labeltemp1 =tkinter.Label (master, text="", fg="black", font="72")
    self.labeltemp1.grid(row=1, column=1,sticky="sw")
    self.labelhum11 = tkinter.Label(master, text="Hum inside", fg="black",  font="72")
    self.labelhum11.grid(row=2,column=0,sticky="sw")
    self.labelhum1 = tkinter.Label (master, text="",fg="black", font="72")
    self.labelhum1.grid(row=2, column=1,sticky="sw")
    self.labeltemp22 = tkinter.Label (master, text="Temp outside", fg="black",font="72")
    self.labeltemp22.grid(row=3, column=0,sticky="sw")
    self.labeltemp2 = tkinter.Label (master, text="", fg="black",  font="72")
    self.labeltemp2.grid(row=3, column=1,sticky="sw")
    self.labelhum22 = tkinter.Label(master, text="Hum outside", fg="black",  font="72")
    self.labelhum22.grid(row=4,column=0,sticky="sw")
    self.labelhum2 = tkinter.Label (master, text="", fg="black",  font="72")
    self.labelhum2.grid(row=4, column=1,sticky="sw")
    #win.focus_set()
    #win.bind("t",toggle_fullscreen(win))
    self.button= tkinter.Button(master, text="No fullscreen", width=10,command=lambda:self.toggle_fullscreen())
    #works as well button= tkinter.Button(win, text="No Fullscreen", width=10,command=toggle_fullscreen)
    self.button.grid(column=0,row=5,sticky="nsew")

    #column2 empty
    self.labelemp1 = tkinter.Label (master, text="", fg="black", width="10" ,bg="white" , font="72")
    self.labelemp1.grid(row=0, column=2,sticky="sw")
    self.labelemp2 = tkinter.Label (master, text="test", fg="black", width="10",bg="black" , font="72")
    self.labelemp2.grid(row=0, column=3,sticky="sw")



    def READ(toggle):
        if toggle:
        [temp1,humidity1] = grovepi.dht(sensorTH1,1)
        self.labeltemp1.configure(text= "{value:6.2f} C".format( value=temp1))
        self.labelhum1.configure(text= "{value:6.2f} %".format( value=humidity1))
        print ("temp1 =", temp1, " humidity1 =", humidity1) #py3

    else: 
        #time.sleep(1)
        [temp2,humidity2] = grovepi.dht(sensorTH2,1)
        self.labeltemp2.configure(text= "{value:6.2f} C".format( value=temp2))
        self.labelhum2.configure(text= "{value:6.2f} %".format( value=humidity2))
        print ("temp2 =", temp2, " humidity2 =", humidity2) #py3


        toggle= not toggle
        #print (toggle)
        return(toggle)






    def read_every_second(self):
    #global readoneortwo not needed after object oriented programming
    #win.attributes("-fullscreen", False)
    #toggle_fullscreen(win)
        readoneortwo=self.READ(readoneortwo)
        master.after(1000, read_every_second)

    # can be used with call of button lamda: toggle_fullscreen (win) or any other window?
    #def toggle_fullscreen(self, event=None):
    #        self.state = not self.state  # Just toggling the boolean
    #        print ("test")
    #        self.attributes("-fullscreen", self.state)
    #        return "break"


    def toggle_fullscreen(self, event=None):
        self.state = not self.state  # Just toggling the boolean
        if self.state:
        self.button["text"]="No Fullscreen"
        else:
        self.button["text"]="Fullscreen"
        self.attributes("-fullscreen", master.state)
        return "break"    

if __name__ == '__main__':
root = tkinter.Tk()
win = mainscreen(root)
#win.read_every_second ()
root.mainloop()

If I want to run win.read_every_second() I get an Error:

UnboundLocalError: local variable 'readoneortwo' referenced before assignment

I was told to use object oriented and class so I do not need global variables , but it seems I do ??

Answer 1

To solve this issue change toggle_fullscreen as follows:

def toggle_fullscreen(self, event=None):
    self.state = not self.state  # Just toggling the boolean
    if self.state:
        self.button["text"]="No Fullscreen"
    else:
        self.button["text"]="Fullscreen"

    self.master.attributes("-fullscreen", self.state)

    return "break"    

And notice the change to self.state ( from master.state ).

You write: I was told to use object oriented and class so I do not need global variables , but it seems I do??

Using class you don't need global variables as long as you use the syntax self.someVariable = someValue. Every function of the class gets self passed as its first parameter making all the self.someVariable variables defined within the class available from within the function (as if they were "global").