import tkinter

base = tkinter.Tk()                # 创建总面板
# 负责标题
base.wm_title("Label Test")            # 创建面板的标题
lb = tkinter.Label(base, text="Pyhton Label")   # 创建一些内容，把创建的内容指定给我之前创建好的名为base的面板，Pyhton Label为面板的内容
# 给相应组件指定布局 
lb.pack()                     # 给相应组件指定布局
base.mainloop()                  # 启动总面板的消息循环(大致意思了解为启动这个面板)

import tkinter
def showlabel():
  global baseFrame   # 调用全局变量，baseFrame，也可以把baseFrame = tkinter.Tk() 放到函数上面
  lb = tkinter.Label(baseFrame, text="我是函数里面的内容")
  lb.pack()

if __name__ == '__main__':
  baseFrame = tkinter.Tk ()
  btn = tkinter.Button(baseFrame, text="点击我、就会执行函数", command=showlabel) # command为指定要执行的函数，不填默认不执行
  btn.pack()
  baseFrame.mainloop()

# pack 布局案例
import tkinter


def button1():
  # 函数内所有代码都是创建一个组件，然后布局
  global baseFreame
  btn1 = tkinter.Button(baseFreame, text='A')
  btn1.pack(side=tkinter.LEFT, expand=tkinter.YES, fill=tkinter.Y)

  btn2 = tkinter.Button(baseFreame, text='B')
  btn2.pack(side=tkinter.TOP, expand=tkinter.YES, fill=tkinter.BOTH)

  btn3 = tkinter.Button(baseFreame, text='C')
  btn3.pack(side=tkinter.RIGHT, expand=tkinter.YES, fill=tkinter.NONE, anchor=tkinter.NE)

  btn4 = tkinter.Button(baseFreame, text='D')
  btn4.pack(side=tkinter.LEFT, expand=tkinter.NO, fill=tkinter.Y)

  btn5 = tkinter.Button(baseFreame, text='E')
  btn5.pack(side=tkinter.TOP, expand=tkinter.NO, fill=tkinter.BOTH)

  btn6 = tkinter.Button(baseFreame, text='F')
  btn6.pack(side=tkinter.BOTTOM, expand=tkinter.YES)

  btn7 = tkinter.Button(baseFreame, text='G')
  btn7.pack(anchor=tkinter.SE)

if __name__ == '__main__':

  baseFreame = tkinter.Tk()
  button1 ()
  baseFreame.mainloop()

import tkinter

def button1():
  # 函数内所有代码都是创建一个组件，然后布局
  global baseFreame
  btn1 = tkinter.Label(baseFreame, text='账户：')
  btn1.grid(row=0, sticky=tkinter.W)
  en = tkinter.Entry(baseFreame)
  en.grid(row=0, column=1, sticky=tkinter.E)

  btn2 = tkinter.Label(baseFreame, text='密码：')
  btn2.grid(row=1, sticky=tkinter.W)
  en2 = tkinter.Entry(baseFreame)
  en2.grid(row=1, column=1, sticky=tkinter.E)

  btn2 = tkinter.Button(baseFreame, text='登陆')
  btn2.grid(row=2, column=1, sticky=tkinter.W)

if __name__ == '__main__':
  baseFreame = tkinter.Tk()
  button1()
  baseFreame.mainloop()