我在 function 内声明了一个全局变量，但在 function 之外它是“未定义的”，它还在 function 内说它是未定义的

Question

我在function 中创建了一个变量，但它说“全局变量在‘模块级别’未定义” 。 也许我的变量是不同的类型，但我不知道如何修复它。 在我在 function 之外使用它之后，它说变量未定义。

def selectSpeed():
    global selection
    selection = (str(speed.get()), "ms")
    label3.config(text=selection)

...

label4 = Label(root, text=selection + "Hi")
label4.place(x=15, y=260)

如果您想知道，我正在使用 tkinter 和其他一些库。 另外，这是我所有的代码：

import pyautogui
import webbrowser
import time
import threading
import copy
import tkinter as tk
from tkinter import *
import tkinter.font as fnt
import random


def attack():
    normal = input("Do you want the program to be slower (s) fast (f) or extra fast BETA (b)?   ")
    repeats = int(input("How many times do you want to send this message?  "))
    delay = int(input("how many ms do you want to wait in between each message?   "))

    isLoaded = input("Press enter when your app has loaded")

    print("You have 5 seconds until the spam begins")
    real_repeats = repeats
    if normal == "f":
        real_repeats = int(repeats / 33)
    if normal == "b":
        real_repeats = int(repeats / 87)

    time.sleep(5)

    def spam():
        for i in range(0, real_repeats):
            pyautogui.hotkey('ctrl', 'v')
            pyautogui.press("enter")
        time.sleep(delay / 1000)

    def super_spam():
        thread1 = threading.Thread(target=spam)
        thread1.start()
        thread2 = threading.Thread(target=spam)
        thread2.start()
        thread3 = threading.Thread(target=spam)
        thread3.start()
        thread4 = threading.Thread(target=spam)
        thread4.start()
        thread5 = threading.Thread(target=spam)
        thread5.start()
        thread6 = threading.Thread(target=spam)
        thread6.start()
        thread7 = threading.Thread(target=spam)
        thread7.start()
        thread8 = threading.Thread(target=spam)
        thread8.start()
        thread9 = threading.Thread(target=spam)
        thread9.start()
        thread10 = threading.Thread(target=spam)
        thread10.start()
        thread11 = threading.Thread(target=spam)
        thread11.start()
        thread12 = threading.Thread(target=spam)
        thread12.start()
        thread13 = threading.Thread(target=spam)
        thread13.start()
        thread14 = threading.Thread(target=spam)
        thread14.start()
        thread15 = threading.Thread(target=spam)
        thread15.start()
        thread16 = threading.Thread(target=spam)
        thread16.start()
        thread17 = threading.Thread(target=spam)
        thread17.start()
        thread18 = threading.Thread(target=spam)
        thread18.start()
        thread19 = threading.Thread(target=spam)
        thread19.start()
        thread20 = threading.Thread(target=spam)
        thread20.start()
        thread21 = threading.Thread(target=spam)
        thread21.start()
        thread22 = threading.Thread(target=spam)
        thread22.start()
        thread23 = threading.Thread(target=spam)
        thread23.start()
        thread24 = threading.Thread(target=spam)
        thread24.start()
        thread25 = threading.Thread(target=spam)
        thread25.start()
        thread26 = threading.Thread(target=spam)
        thread26.start()
        thread27 = threading.Thread(target=spam)
        thread27.start()
        thread28 = threading.Thread(target=spam)
        thread28.start()
        thread29 = threading.Thread(target=spam)
        thread29.start()
        thread30 = threading.Thread(target=spam)
        thread30.start()
        thread31 = threading.Thread(target=spam)
        thread31.start()
        thread32 = threading.Thread(target=spam)
        thread32.start()

    def mega_spam():
        threadM1 = threading.Thread(target=super_spam)
        threadM1.start()
        threadM2 = threading.Thread(target=super_spam)
        threadM2.start()
        threadM3 = threading.Thread(target=super_spam)
        threadM3.start()

    if normal == "s":
        spam()

    if normal == "f":
        super_spam()

    if normal == "b":
        mega_spam()


root = Tk()
root.title('Spam Program')
root.geometry("550x280")

button = Button(root, text='Start Spamming', command=attack, font=fnt.Font(size=20), activebackground="light gray",
                bd=10)
button.place(x=205, y=15)


def selectMode():
    speed1 = str(mode.get())


mode = IntVar()
Radiobutton(root, text=' Slower', variable=mode, value=1, font=fnt.Font(size=15), command=selectMode).place(x=15, y=15)
Radiobutton(root, text=' Faster', variable=mode, value=2, font=fnt.Font(size=15), command=selectMode).place(x=15, y=65)
Radiobutton(root, text=' BETA', variable=mode, value=3, font=fnt.Font(size=15), command=selectMode).place(x=15, y=115)


def selectSpeed():
    global selection
    selection = (str(speed.get()), "ms")
    label3.config(text=selection)


speed = DoubleVar()
restspeed = Scale(root, from_=210, to=3000, orient=HORIZONTAL, length=320, bd=5, variable=speed, sliderlength=40)
restspeed.place(x=205, y=120)
button = Button(root, text="Set Spam Speed", command=selectSpeed, bd=5)
button.place(x=360, y=200)

label3 = Label(root)
label3.place(x=250, y=210)

times = Spinbox(root, from_=1, to=100001, width=6)
times.place(x=150, y=210)

label4 = Label(root, text=selection + "Hi")
label4.place(x=15, y=260)

mainloop()

所以如果可以的话请帮忙

Answer 1

关键字“global”不定义新变量。 它只是将变量从全局 scope 拉到本地。 因此，由于全局scope中没有selection变量，所以不起作用。 您是否考虑过使用 return 关键字从 function 返回值，而不是使用和修改全局变量？