Untitled

from tkinter import *

bomb = 100
score = 0
best_score = 0
press_return = True

def start(event):
    global press_return
    global bomb
    global score
    if not press_return:
        pass
    else:
        bomb = 100
        score = 0
        label.config(text="")
        update_bomb()
        update_score()
        update_display()
        press_return = False

def update_display():
    global bomb
    global score
    global best_score
    if bomb > 50:
        bomb_label.config(image=normal_photo)
    elif 0 < bomb <= 50:
        bomb_label.config(image=no_photo)
    else:
        bomb_label.config(image=bang_photo)
    fuse_label.config(text="Fuse: " + str(bomb))
    score_label.config(text="Score: " + str(score))
    best_score_label.config(text='Best Score: ' + str(best_score))
    fuse_label.after(100, update_display)

def update_bomb():
    global bomb
    bomb -= 3
    if is_alive():
        fuse_label.after(400, update_bomb)

def update_score():
    global score
    global best_score
    score += 1
    if is_alive():
        score_label.after(3000, update_score)
        if best_score < score:
            best_score = score

def click():
    global bomb
    if is_alive():
        bomb += 1

def is_alive():
    global bomb
    global press_return
    if bomb <= 0:
        label.config(text="Game Over!")
        press_return = True
        return False
    else:
        return True

root = Tk()
root.title("Bang Bang")
root.geometry("500x600")

label = Label(root, text="Press [Enter] to start the game",
              font=("Comic Sans MS", 12, "italic", "bold"))
label.pack()

fuse_label = Label(root, text="Fuse: " + str(bomb),
                   font=("Comic Sans MS", 14))
fuse_label.pack()

score_label = Label(root, text="Score: " + str(score),
                    font=("Comic Sans MS", 14))
score_label.pack()

best_score_label = Label(root, text='Best Score: ' + str(best_score),
                         font=('Comic Sans Ms', 14))
best_score_label.pack()

no_photo = PhotoImage(file="img/bomb_no.gif")
normal_photo = PhotoImage(file="img/bomb_normal.gif")
bang_photo = PhotoImage(file="img/pow.gif")

bomb_label = Label(root, image=normal_photo)
bomb_label.pack()

click_button = Button(root, text="Click me", bg="#000000", fg="#ffffff",
                      font=("Comic Sans MS", 14), width=15, command=click)
click_button.pack()

root.bind('<Return>', start)
root.mainloop()