Jumbbled.py

import tkinter
from tkinter import *
import random
from tkinter import messagebox


def main():
# you can add more words as per your requirement
    global answers
    answers = [
        "python",
        "java",
        "swift",
        "canada",
        "india",
        "america",
        "london",
    ]
    global words
    words = [
        "nptoyh",
        "avja",
        "wfsit",
        "cdanaa",
        "aidin",
        "aiearcm",
        "odnlon",
    ]

# I have improvised the code by using len(words)
    global num
    num =  random.randrange(0, len(words), 1)

    def default():
        global words,answers,num
        lbl.config(text = words[num])

    def res():
        global words,answers,num
        num = random.randrange(0, len(words), 1)
        lbl.config(text = words[num])
        e1.delete(0, END)


    def checkans():
        global words,answers,num
        var = e1.get()
        if var == answers[num]:
            messagebox.showinfo("Success", "This is a correct answer")
            res()
        else:
            messagebox.showerror("Error", "This is not Correct")
            e1.delete(0, END)




    root = tkinter.Tk()
    root.geometry("350x400+400+300")
    root.title("Jumbbled")
    root.configure(background = "#000000")

    lbl = Label(
        root,
        text = "Your here",
        font = ("Verdana", 18),
        bg = "#000000",
        fg = "#FFFFFF",
    )
    lbl.pack(pady = 30,ipady=10,ipadx=10)


    ans1 = StringVar()
    e1 = Entry(
        root,
        font = ("Verdana", 16),
        textvariable = ans1,
    )
    e1.pack(ipady=5,ipadx=5)

    btncheck = Button(
        root,
        text = "Check",
        font = ("Comic sans ms", 16),
        width = 16,
        bg = "#4c4b4b",
        fg = "#6ab04c",
        relief = GROOVE,
        command = checkans,
    )
    btncheck.pack(pady = 40)

    btnreset = Button(
        root,
        text = "Reset",
        font = ("Comic sans ms", 16),
        width = 16,
        bg = "#4c4b4b",
        fg = "#EA425C",
        relief = GROOVE,
        command = res,
    )
    btnreset.pack()

    default()
    root.mainloop()