Python tkinter之pack

1、默认居中，从上而下

# -*- encoding=utf-8 -*-
import tkinter
from tkinter import *
if __name__ == '__main__':
    pass
    win = tkinter.Tk()  # 窗口
    win.title('南风丶轻语')  # 标题
    screenwidth = win.winfo_screenwidth()  # 屏幕宽度
    screenheight = win.winfo_screenheight()  # 屏幕高度
    width = 300
    height = 100
    x = int((screenwidth - width) / 2)
    y = int((screenheight - height) / 2)
    win.geometry('{}x{}+{}+{}'.format(width, height, x, y))  # 大小以及位置
    Button(win, text='按钮1', bg='red').pack()  # 默认居中，从上而下
    Button(win, text='按钮2', bg='yellow').pack()
    Button(win, text='按钮3', bg='blue').pack()
    win.mainloop()

2、填充X,Y轴

2.1、填充X轴（fill=X）

# -*- encoding=utf-8 -*-
import tkinter
from tkinter import *
if __name__ == '__main__':
    pass
    win = tkinter.Tk()  # 窗口
    win.title('南风丶轻语')  # 标题
    screenwidth = win.winfo_screenwidth()  # 屏幕宽度
    screenheight = win.winfo_screenheight()  # 屏幕高度
    width = 300
    height = 100
    x = int((screenwidth - width) / 2)
    y = int((screenheight - height) / 2)
    win.geometry('{}x{}+{}+{}'.format(width, height, x, y))  # 大小以及位置

    Button(win, text='按钮1', bg='red').pack(
            fill=X,  # 填充横坐标
            )
    Button(win, text='按钮2', bg='yellow').pack()
    Button(win, text='按钮3', bg='blue').pack()
    win.mainloop()

 2.2、填充Y轴（fill=Y）

# -*- encoding=utf-8 -*-
import tkinter
from tkinter import *

if __name__ == '__main__':
    pass
    win = tkinter.Tk()  # 窗口
    win.title('南风丶轻语')  # 标题
    screenwidth = win.winfo_screenwidth()  # 屏幕宽度
    screenheight = win.winfo_screenheight()  # 屏幕高度
    width = 300
    height = 100
    x = int((screenwidth - width) / 2)
    y = int((screenheight - height) / 2)
    win.geometry('{}x{}+{}+{}'.format(width, height, x, y))  # 大小以及位置

    Button(win, text='按钮1', bg='red').pack(
            side=LEFT,  # 放置在左边
            fill=Y,  # 填充纵坐标
            )
    Button(win, text='按钮2', bg='yellow').pack()
    Button(win, text='按钮3', bg='blue').pack()
    win.mainloop()

 2.3、填充XY轴（fill=BOTH,expand=True）

# -*- encoding=utf-8 -*-


import tkinter
from tkinter import *

if __name__ == '__main__':
    pass
    win = tkinter.Tk()  # 窗口
    win.title('南风丶轻语')  # 标题
    screenwidth = win.winfo_screenwidth()  # 屏幕宽度
    screenheight = win.winfo_screenheight()  # 屏幕高度
    width = 300
    height = 100
    x = int((screenwidth - width) / 2)
    y = int((screenheight - height) / 2)
    win.geometry('{}x{}+{}+{}'.format(width, height, x, y))  # 大小以及位置

    Button(win, text='按钮1', bg='red').pack(
            side=LEFT,  # 放置在左边
            fill=BOTH,  # 填充
            expand=True,  # 如果父组件大小增长，则展开小部件
            )
    Button(win, text='按钮2', bg='yellow').pack()
    Button(win, text='按钮3', bg='blue').pack()
    win.mainloop()

 3、内外间距

# -*- encoding=utf-8 -*-

import tkinter
from tkinter import *

if __name__ == '__main__':
    pass
    win = tkinter.Tk()  # 窗口
    win.title('南风丶轻语')  # 标题
    screenwidth = win.winfo_screenwidth()  # 屏幕宽度
    screenheight = win.winfo_screenheight()  # 屏幕高度
    width = 300
    height = 300
    x = int((screenwidth - width) / 2)
    y = int((screenheight - height) / 2)
    win.geometry('{}x{}+{}+{}'.format(width, height, x, y))  # 大小以及位置
    Button(win, text='按钮1', bg='red', width=20).pack(
            ipadx=10,  # 内间距x
            ipady=10,  # 内间距y
            padx=10,  # 外间距x
            pady=10  # 外间距y
            )
    Button(win, text='按钮2', bg='yellow', width=20).pack()
    Button(win, text='按钮3', bg='blue').pack()
    win.mainloop()

 备注：

①按钮1和按钮2的宽度一致，但是按钮1的ipadx=10，可以看出按钮1比按钮二长10

②按钮1设置了X和Y的外间距，因此可以看出组件间的间隔

4、side布局

4.1、上下左右布局

# -*- encoding=utf-8 -*-

import tkinter
from tkinter import *

if __name__ == '__main__':
    pass
    win = tkinter.Tk()  # 窗口
    win.title('南风丶轻语')  # 标题
    screenwidth = win.winfo_screenwidth()  # 屏幕宽度
    screenheight = win.winfo_screenheight()  # 屏幕高度
    width = 300
    height = 100
    x = int((screenwidth - width) / 2)
    y = int((screenheight - height) / 2)
    win.geometry('{}x{}+{}+{}'.format(width, height, x, y))  # 大小以及位置
    Button(win, text='按钮1', bg='red').pack(side=RIGHT)
    Button(win, text='按钮2', bg='yellow').pack(side=LEFT)
    Button(win, text='按钮3', bg='blue').pack(side=BOTTOM)
    Button(win, text='按钮4', bg='green').pack(side=TOP)

    win.mainloop()

 4.2、从左（右）向右（左）

# -*- encoding=utf-8 -*-

import tkinter
from tkinter import *

if __name__ == '__main__':
    pass
    win = tkinter.Tk()  # 窗口
    win.title('南风丶轻语')  # 标题
    screenwidth = win.winfo_screenwidth()  # 屏幕宽度
    screenheight = win.winfo_screenheight()  # 屏幕高度
    width = 300
    height = 100
    x = int((screenwidth - width) / 2)
    y = int((screenheight - height) / 2)
    win.geometry('{}x{}+{}+{}'.format(width, height, x, y))  # 大小以及位置
    Button(win, text='按钮1', bg='red').pack(side=LEFT)
    Button(win, text='按钮2', bg='yellow').pack(side=LEFT)
    Button(win, text='按钮3', bg='blue').pack(side=LEFT)
    Button(win, text='按钮4', bg='green').pack(side=LEFT)

    Button(win, text='按钮5', bg='red').pack(side=RIGHT)
    Button(win, text='按钮6', bg='yellow').pack(side=RIGHT)
    Button(win, text='按钮7', bg='blue').pack(side=RIGHT)
    Button(win, text='按钮8', bg='green').pack(side=RIGHT)

    win.mainloop()

 4.3、自动填充满父元素

# -*- encoding=utf-8 -*-

import tkinter
from tkinter import *

if __name__ == '__main__':
    pass
    win = tkinter.Tk()  # 窗口
    win.title('南风丶轻语')  # 标题
    screenwidth = win.winfo_screenwidth()  # 屏幕宽度
    screenheight = win.winfo_screenheight()  # 屏幕高度
    width = 400
    height = 500
    x = int((screenwidth - width) / 2)
    y = int((screenheight - height) / 2)
    win.geometry('{}x{}+{}+{}'.format(width, height, x, y))  # 大小以及位置

    all_count = 20
    line_count = 4
    color = ['red', 'blue', 'yellow', 'pink', 'green']
    color_index = 0
    for j in range(int(all_count / line_count)):
        f = Frame()
        f.pack(fill=BOTH, expand=True)
        for i in range(line_count):
            Button(f, text='排列按钮', bg=color[color_index]).pack(side='left', expand='true',
                                                               fill=BOTH)
            color_index += 1
            if color_index >= len(color):
                color_index = 0

    win.mainloop()