在python tkinter中更新标签变量
这段代码运行良好,但当我按下按钮时,它不会给我一个随机数。我需要它给我一个随机输出,这样我就可以从列表中得到一个随机元素。有人知道这个问题的答案吗?在这里。现在,您可以看到标签发生了更改:在python tkinter中更新标签变量,python,variables,tkinter,random,label,Python,Variables,Tkinter,Random,Label,这段代码运行良好,但当我按下按钮时,它不会给我一个随机数。我需要它给我一个随机输出,这样我就可以从列表中得到一个随机元素。有人知道这个问题的答案吗?在这里。现在,您可以看到标签发生了更改: 从tkinter导入* 将tkinter作为tk导入 随机输入 def测试_打印(): f=random.randint(01118) label.configure(text=str(f)) master.update_idletasks() #创建Tk窗口 master=Tk() 硕士学位(600400)
从tkinter导入*
将tkinter作为tk导入
随机输入
def测试_打印():
f=random.randint(01118)
label.configure(text=str(f))
master.update_idletasks()
#创建Tk窗口
master=Tk()
硕士学位(600400)
#获得一个可根据需要扩展的Fra,e
#和窗户一样大
窗格=框架(主)
pack(fill=BOTH,expand=True)
#按钮小部件,也可以扩展和填充
#在父窗口小部件中
#按钮1
b1=按钮(窗格,text=“单击我!”,
背景=“红色”,fg=“白色”,命令=测试(打印)
b1.包装(侧面=顶部,展开=正确,填充=两者)
label=tk.label(窗格)
label.pack(侧面=底部,展开=假)
#执行Tkinter
master.mainloop()
答案如下
from tkinter import *
import tkinter as tk
import random
f = 0
def test_print():
f = random.randint(0,118)
master.update_idletasks()
# creating Tk window
master = Tk()
master.minsize(600,400)
var = IntVar()
var.set(f)
# cretaing a Fra, e which can expand according
# to the size of the window
pane = Frame(master)
pane.pack(fill = BOTH, expand = True)
# button widgets which can also expand and fill
# in the parent widget entirely
# Button 1
b1 = Button(pane, text = "Click me !",
background = "red", fg = "white", command = test_print)
b1.pack(side = TOP, expand = True, fill = BOTH)
label = tk.Label(pane, textvariable = var)
label.pack(side = BOTTOM, expand = False)
# Execute Tkinter
master.mainloop()
您只需在函数内部说
var.set('whatever')
。
from tkinter import *
import tkinter as tk
import random
maxnumber = 118
f = random.randint(0,maxnumber)
def test_print():
master.update_idletasks()
label.configure(textvariable = var)
# creating Tk window
master = Tk()
master.minsize(600,400)
var = IntVar()
var.set(f)
# cretaing a Fra, e which can expand according
# to the size of the window
pane = Frame(master)
pane.pack(fill = BOTH, expand = True)
# button widgets which can also expand and fill
# in the parent widget entirely
# Button 1
b1 = Button(pane, text = "Click me !",
background = "red", fg = "white", command = test_print)
b1.pack(side = TOP, expand = True, fill = BOTH)
label = tk.Label(pane)
label.pack(side = BOTTOM, expand = False)
# Execute Tkinter
master.mainloop()