python笔记1--python 中 Tkinder 使用常见问题
python笔记1--python 中 Tkinder 使用常见问题
在使用Tkinder开发GUI时候需要import Tkinder，但是不同的版本的python使用上面有所区别，其中2.x和3.x中import就有所区别，相关的modules名称也有区别，使用时候需要加以注意，否则会出现错误！
python 2.x （本人安装的是2.7.12）中Tkinder import需要大写，如下：
import tkinter或者
from tkinter import *
python 3.x （本人安装的是3.5.1）中的Tkinder使用小写，如下：
import tkinter
或者
from tkinter import *
以上两个版本的Tkinder Modules也有所不同，如下所示：
python 2.7.12 如下：
Other modules that provide Tk support include:
ScrolledText
Text widget with a vertical scroll bar built in.
tkColorChooser
Dialog to let the user choose a color.
tkCommonDialog
Base class for the dialogs defined in the other modules listed here.
tkFileDialog
Common dialogs to allow the user to specify a file to open or save.
tkFont
Utilities to help work with fonts.
tkMessageBox
Access to standard Tk dialog boxes.
tkSimpleDialog
Basic dialogs and convenience functions.
Tkdnd
Drag-and-drop support for Tkinter. This is experimental and should become deprecated when it is replaced with the Tk DND.
turtle
Turtle graphics in a Tk window.
python 3.5.1如下：
Other modules that provide Tk support include:
tkinter.scrolledtext
Text widget with a vertical scroll bar built in.
tkinter.colorchooser
Dialog to let the user choose a color.
tkinter.commondialog
Base class for the dialogs defined in the other modules listed here.
tkinter.filedialog
Common dialogs to allow the user to specify a file to open or save.
tkinter.font
Utilities to help work with fonts.
tkinter.messagebox
Access to standard Tk dialog boxes.
tkinter.simpledialog
Basic dialogs and convenience functions.
tkinter.dnd
Drag-and-drop support for tkinter. This is experimental and should become deprecated when it is replaced with the Tk DND.
turtle
Turtle graphics in a Tk window
示例：
#_*_coding:utf-8_*_
from Tkinter import *
import tkSimpleDialog as dl
import tkMessageBox as mb
# python 3.5
# from tkinter import *
# import tkinter.simpledialog as dl
# import tkinter.messagebox as mb
root = Tk()
w = Label(root,text="Lable title")
w.pack() #使其循环显示，而不是显示一次就消失了
mb.showinfo("welcome","welcome to ktinter")
guess = dl.askinteger("Number","Enter a number!")
output = 'this is a output message'
mb.showinfo("output",output)结果：
以上是python2.x和python3.x在Tkinder上的小小区别，使用时候需要注意，否则会报错！
其它相关区别可以参考各个python版本对应的documentation！