def functions in tkinter - Printable Version

def functions in tkinter - Printable Version

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def functions in tkinter - Fureneshi - Dec-13-2019

I need to do something like this:

from tkinter import *
import tkinter as tk
from PIL import ImageTk, Image
import tkinter.filedialog

class ST:
    def __init__(self, char):
        self.ST = char
        self.F = Frame(char)
        self.F.place(x = 0, y = 0, width=460, height=401)

        #def
        def s():
            self.s = Canvas(self.ST)
            self.s.configure(bd=0, highlightthickness=0)
            self.s.place(x=0, y=0, width=460, height=401)
            self.s.create_image(0, 0, image=self.image, anchor=NW)
            self.s.create_text(220, 80,fill="black",font="Times 20 italic bold", text="Skill")

        s = s()

        def c():
            self.c = Canvas(self.ST)
            self.c.configure(bd=0, highlightthickness=0)
            self.c.place(x=0, y=0, width=460, height=401)
            self.c.create_image(0, 0, image=self.image, anchor=NW)
            self.c.create_text(220, 80,fill="black",font="Times 20 italic bold", text="Anne Bonny")
            self.c.create_text(220, 120,fill="black",font="Times 12 italic bold", text="   20 years old \n Loyal to Portugal")

        #Background
        self.image = PhotoImage(file="D:\\o.gif")
        self.bg = Canvas(self.ST)
        self.bg.place(x=0, y=0, width=460, height=401)
        self.bg.create_image(0, 0, image=self.image, anchor=NW)


        #Character
        self.c()

        self.imgc = ImageTk.PhotoImage(Image.open('D:\\f.png'))
        self.panelc = Label(self.ST, image = self.imgc)
        self.panelc.place(x = 59, y = 55, width=75, height=89)

        self.ST.bind("f", self.skill)
        
    def skill(self, event):
        self.panelc.place_forget()
        self.c.place_forget()
        s().place(x=0, y=0, width=460, height=401)        
        
        
char = Tk()
st = ST(char)
char.geometry("460x401")
char.wm_attributes("-transparentcolor", "yellow")
char.mainloop()

when the f key was pressed it should call def s (), but it's not working, can anyone tell me why?

show
NameError: name 's' is not defined

RE: def functions in tkinter - michael1789 - Dec-13-2019

Before your edit the indentation was off. Is it like that in the file? I saw that as the problem.

RE: def functions in tkinter - Fureneshi - Dec-13-2019

(Dec-13-2019, 08:55 PM)michael1789 Wrote: Before your edit the indentation was off. Is it like that in the file? I saw that as the problem.

This program is more complete, and it is correctly indented.

RE: def functions in tkinter - michael1789 - Dec-13-2019

Full disclosure, I don't know anything about tkinter specifically, but to my eyes your "s = s()" and your Background and Character stuff are all on the level that gets read in as your ST.__init__.

And "s = s()" sets the value of "s" to "s()", it doesn't call the function. I think, anyway.

RE: def functions in tkinter - joe_momma - Dec-26-2019

I substituted your photos and ran your script- it only outputs errors so I started to comment out lines. I finally got an gui with removing:

#s = s()
#self.c()
#char.wm_attributes("-transparentcolor", "yellow")

the background image showed but the label got garbage collected.
Think about starting over and here's a couple tips:
You have imported tkinter twice once as a wild card * and as tk use the tk.
so your reference will look like self.canvas= tk.Canvas(...)
keep it simple with one canvas object. You can change it's color or clear it-
self.canvas.delete('all') to clear it
self.canvas.itemconfig(bg='black)
you don't need to create new a canvas.
remove the functions in the init function and create them like your skill function.
when you call a function

Quote:s().place(x=0, y=0, width=460, height=401)

have your function widget place or pack or grid the object
I like to recommend the guizero module to people starting with tkinter the creators have
made it easy and simplified the process to making a gui
you can find the docs here:guizero docs
here's an example of your code converted to guizero use your own paths to images:

from guizero import (Picture,App,PushButton,Text)
def change_background():
    picture_1.hide()
    picture_2.hide()
    app.bg='black'
    txt_1.value='Hello Iowa'
    txt_1.color='white'
def redo_background(event):
    picture_1.show()
    picture_2.show()
    app.bg='white'
    txt_1.value='you pressed a key'
    txt_1.color= 'purple'

app= App(title='my app',height=600,width=600)
btn1= PushButton(app, image='path_to_image',
                 height=100,width=100,align='top',
                 command= change_background)
picture_1= Picture(app, image='path_to_image')
picture_2= Picture(app, image='path_to_image',align='left',
                   height=100,width=100)
txt_1= Text(app, text='Hello World even Iowa', color='green',
                size=16, align='bottom')
app.tk.bind('f', redo_background)

app.display()

it's a wrapper of tkinter so you'll be familiar with the function it accepts png and gif files by
default or you can use PIL.
best of luck,
Joe

RE: def functions in tkinter - woooee - Dec-26-2019

None of your functions are members of the class so

        def s():
            self.s = Canvas(self.ST)

does not know what self refers to.