tkinter

Tkinter Button command getting executed before clicking the button [duplicate]

由 与世无争的帅哥 提交于 2021-01-19 08:38:13
问题 This question already has answers here : Why is Button parameter “command” executed when declared? (5 answers) Closed 2 years ago . I have created a frame, In that i have two browse button, i want browse two file that ending with ".txt" extension and printing it on screen. In my scenario, browse function getting called before pressing Button's on the frame. Am expecting it should called when i press Button. Complete code attached. Kindly someone correct me what i did wrong. from Tkinter

Tkinter Button command getting executed before clicking the button [duplicate]

由 一个人想着一个人 提交于 2021-01-19 08:37:43
问题 This question already has answers here : Why is Button parameter “command” executed when declared? (5 answers) Closed 2 years ago . I have created a frame, In that i have two browse button, i want browse two file that ending with ".txt" extension and printing it on screen. In my scenario, browse function getting called before pressing Button's on the frame. Am expecting it should called when i press Button. Complete code attached. Kindly someone correct me what i did wrong. from Tkinter

OptionMenu command function requires argument

由 喜夏-厌秋 提交于 2021-01-16 01:08:52
问题 This is a pretty general question about the optionmenu widget in tkinter. When defining an OptionMenu widget, and assigning a function as its command, why does it require an argument? My code: from tkinter import * def update(): x = optionvar.get() x = str(x) mylabel.config(text=x) root = Tk() l = [] for n in range(10): l.append(n) t = tuple(l) optionvar = IntVar() optionvar.set('hello stackoverflow') mymenu = OptionMenu(root, optionvar, *t, command=update) mylabel = Label(root) mymenu.pack()

OptionMenu command function requires argument

由 半世苍凉 提交于 2021-01-16 01:04:41
问题 This is a pretty general question about the optionmenu widget in tkinter. When defining an OptionMenu widget, and assigning a function as its command, why does it require an argument? My code: from tkinter import * def update(): x = optionvar.get() x = str(x) mylabel.config(text=x) root = Tk() l = [] for n in range(10): l.append(n) t = tuple(l) optionvar = IntVar() optionvar.set('hello stackoverflow') mymenu = OptionMenu(root, optionvar, *t, command=update) mylabel = Label(root) mymenu.pack()

（一）Python入门：03开发环境介绍-交互模式的使用-IDLE介绍和使用

由 99封情书 提交于 2021-01-14 04:09:04
一：Python开发环境 　　开发环境，英文是 IDE（Integrated Development Environment 集成开发环境）。 　　不要纠结于使用哪个开发环境。开发环境本质上就是对 Python解释器 python.exe 的 封装，核心都一样。可以说：“开发环境IDE，只是解释器的一个外挂而已”，只是为了让 程序员更加方便编程，减少出错率，尤其是拼写错误。 　　常用的开发环境： IDLE　　 Pycharm wingIDE Eclipse IPython 二：交互模式（脚本Shell模式） 进入cmd命令窗口，输入python，回车 >>> 此符号为提示符 关闭交互窗口： （1）Ctrl+Z和回车 （2）输入quit()命令 （3）直接关闭命令行窗口 中断程序执行： Ctrl+C 　　交互模式工作原理和Python处理文件的方式一样。除了一点：当你输入一些值时，交 互模式会自动打印输出。Py 文件中则必须使用 print 语句。 三：IDLE开发环境介绍 IDLE是Python的官方标准开发环境，Python安装完后同时就安装了 IDLE。 IDLE已经具备了 Python开发几乎所有功能（语法智能提示、不同颜色显示不同类型等），也不需要其他配置，非常适合初学者使用。 IDLE是Python 标准发行版内置的一个简单小巧的IDE，包括了交互式命令行、编辑器、

Is it possible to have a standard style for a widget?

由 走远了吗. 提交于 2021-01-11 00:07:36
问题 I want all of the buttons in my gui to have the same style. Right now I manually write in the attributes I want but it takes up so much space. Also, if I wanted to change the style I would have to go to every single button. Is it possible to have a style i define once and then reference it when making all buttons? Something like the following: basic_style = {'background': 'blue', 'foreground':'white', 'font':'Helvetica 8 bold'} self.btn = tk.Button(text = 'Hello', style = basic_style) I know

Is it possible to have a standard style for a widget?

由 瘦欲@ 提交于 2021-01-11 00:06:40
问题 I want all of the buttons in my gui to have the same style. Right now I manually write in the attributes I want but it takes up so much space. Also, if I wanted to change the style I would have to go to every single button. Is it possible to have a style i define once and then reference it when making all buttons? Something like the following: basic_style = {'background': 'blue', 'foreground':'white', 'font':'Helvetica 8 bold'} self.btn = tk.Button(text = 'Hello', style = basic_style) I know

Is it possible to have a standard style for a widget?

由 夙愿已清 提交于 2021-01-11 00:02:52
问题 I want all of the buttons in my gui to have the same style. Right now I manually write in the attributes I want but it takes up so much space. Also, if I wanted to change the style I would have to go to every single button. Is it possible to have a style i define once and then reference it when making all buttons? Something like the following: basic_style = {'background': 'blue', 'foreground':'white', 'font':'Helvetica 8 bold'} self.btn = tk.Button(text = 'Hello', style = basic_style) I know

Is it possible to have a standard style for a widget?

由 蓝咒 提交于 2021-01-10 23:53:52
问题 I want all of the buttons in my gui to have the same style. Right now I manually write in the attributes I want but it takes up so much space. Also, if I wanted to change the style I would have to go to every single button. Is it possible to have a style i define once and then reference it when making all buttons? Something like the following: basic_style = {'background': 'blue', 'foreground':'white', 'font':'Helvetica 8 bold'} self.btn = tk.Button(text = 'Hello', style = basic_style) I know

Is it possible to have a standard style for a widget?

由 ⅰ亾dé卋堺 提交于 2021-01-10 23:49:21
问题 I want all of the buttons in my gui to have the same style. Right now I manually write in the attributes I want but it takes up so much space. Also, if I wanted to change the style I would have to go to every single button. Is it possible to have a style i define once and then reference it when making all buttons? Something like the following: basic_style = {'background': 'blue', 'foreground':'white', 'font':'Helvetica 8 bold'} self.btn = tk.Button(text = 'Hello', style = basic_style) I know
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