Status object has no attribute "loading"

Question

I am working on a progress bar in Tkinter using object-oriented design, and I'm having an issue.

from tkinter import *
from tkinter import ttk

class Status:
    def __init__(self):
        self.root = Tk()
        self.root.geometry("400x20")
        self.loading = ttk.Progressbar(self.root, length=15, value=0, orient=HORIZONTAL, command=self.start_progress())
        self.loading.pack(fill=X)
        self.root.mainloop()

    def start_progress(self):
        self.loading.start(10)

bar = Status()

I'm supposed to get a progress bar which indefinitely loads, but instead, I'm getting

"self.loading.start(10)
AttributeError: 'Status' object has no attribute 'loading'".

What I want is for the progress bar to automatically update without the use of any button. it should fill up and stop when it is full.

At a first look you code seem's correct for me, could you please show more with the part that is used to call and use the Status class ? — Xiidref, Jul 02 '19 at 15:59
Lose the `()` from the command. it needs to be `command=self.start_progress`, not `command=self.start_progress()` — Novel, Jul 02 '19 at 16:09
Did that and now it says ```_tkinter.TclError: unknown option "-command"``` — Dre Day, Jul 02 '19 at 16:12
I don't think progress bar accepts a command callback. What are you trying to achieve by passing command? — Henry Yik, Jul 02 '19 at 16:30
What I want is for the progress bar to automatically update without the use of any button. it should fill up and stop when it is full. If there is another way, i would be more welcome to it — Dre Day, Jul 02 '19 at 16:42

score 0 · Accepted Answer · answered Jul 03 '19 at 02:01

Normally you would create a IntVar and set it as a variable for your Progressbar. Then you can trace the changes on your IntVar and stop when necessary.

from tkinter import *
from tkinter import ttk

class Status:
    def __init__(self):
        self.root = Tk()
        self.root.geometry("400x20")
        self.var = IntVar()
        self.loading = ttk.Progressbar(self.root, length=15, variable=self.var, orient=HORIZONTAL)
        self.loading.pack(fill=X)
        self.var.trace("w",self.trace_method)
        self.start_progress()
        self.root.mainloop()

    def start_progress(self):
        self.loading.start(10)

    def trace_method(self,*args):
        if self.var.get() >= 99: #when it reaches 100 it would go back to 0
            self.loading.stop()

bar = Status()

@DreDay if this helped, consider accepting the answer so this question can be closed. — Henry Yik, Jul 26 '19 at 07:48

Status object has no attribute "loading"

1 Answers1