TypeError: counter_label()缺少一个必需的位置参数：'label‘

Question

我会数数字，但我不会在标签上倒计时

Tkinter回调回溯中的异常(最近一次调用)：文件“C：\Program-Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2288.0_x64__qbz5n2kfra8p0\lib\tkinter_init_.py”，第1921行， call 返回self.func(*args)文件"C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.2288.0_x64__qbz5n2kfra8p0\lib\tkinter_init_.py"，行839，以callit

func(*args) TypeError: counter_label()缺少一个必需的位置参数：‘label’

import tkinter as tk
counter = 0 
status = 1
def counter_label(label):
    global status
    def countup():
        global counter
        counter += 1
        
        label.after(1000, countup)
    
    def countdown():
        global counter
        counter -=1
        # for num in range(start,0,-1):
        #     print(num)
        
        label.after(1000,countdown)
    
    
    if status == 1:
        countup()
                
    if counter == 11:
        status = 0
                
    if status == 0:
        countdown()
                
    if counter == 0:
        status = 1 
    label.config(text=str(counter))

    label.after(1000,counter_label)


print(counter)

root = tk.Tk()
root.title("Counting Seconds")
label = tk.Label(root, fg="green")
label.pack()
counter_label(label)

root.mainloop()

Answer 1

递归调用

label.after(1000,counter_label)

可以修改为包含带有匿名函数的标签参数。

label.after(1000,lambda x=label: counter_label(x))