开智学院的第二周任务，把CLI下的日记写成窗口的形式表现出来，基本实现的功能如下：

• 每次输入一行
• 输入前把上次内容打印出来
• 自动保存在工作路径

把CLI在窗口中表现出来，开智学院提示用到Tkinter，常用的官方文档如下：

• An Introduction To Tkinter这个是我看的最多的，解释的很详尽基本能解决大妈留下来的问题是，下面两个也是芝麻星上给出的
• Tkinter reference: a GUI for Python
• 24.1. Tkinter — Python interface to Tcl/Tk

开始学习使用Tkinter( 我的运行环境是Win7 Sublime text 3 Powershll)

• 我的代码用的基本组件

  • Label
  • Entry
  • Frame
  • Button

• 组件方法

  • .insert
  • .delete

• 下面是我的全部代码

#-*- coding:utf-8 -*-

from Tkinter import *
import time
from os.path import exists

daily_file = "daily.txt"

def main():

    root = Tk()
    root.title("我的日记本") #窗口的标题
    root.geometry("600x400+50+50") #600x400是初始化窗口的大小，0，0是窗口的初始位置


    def ShowHistory():
        if exists(daily_file):
            daily = open(daily_file,'r')
            T.delete(1.0,END) #删除text窗口中之前显示的内容 
            T.insert(END,"="*18+'\n')
            T.insert(END,daily.read())
            T.insert(END,"="*18+'\n')
            daily.close()
        else:
            T.insert(END,"对不起你还没开始写日记.\n")

    def ClearDaily():
        if exists(daily_file):
            daily = open(daily_file,"w")
            T.delete(1.0,END)
            T.insert(END,"已删除日记 \n")
            daily.close()
        else:
            T.insert(END, "对不起你还没开始写日记.\n")

    def AddLine(event):
        daily = open(daily_file,"a")
        new_line = E.get().encode('utf-8')
        current_time = time.strftime("<%Y-%m-%d %H:%M:%S>")
        daily.write(current_time+'\t')
        daily.write(new_line +'\n')
        daily.close()
        E.delete(0,END)

        T.insert(END,new_line)

    frm = Frame(root,height = 5)
    frm.pack()

    button1 = Button(frm,text = "历史记录",width =20,command = ShowHistory)
    button1.pack(side ='left',padx =5, pady = 2)

    button2 = Button(frm, text = "清除记录",width = 20, command = ClearDaily)
    button2.pack(side ='left',padx = 5, pady = 2)

    button3 = Button(frm, text = "关闭日记", width = 20, command = root.destroy)
    button3.pack(side ='left',padx = 5, pady = 2)

    T = Text(root,height= 25,bg = "grey", font = "Aral 10")
    T.pack()

    frm2 = Frame(root, height = 10)
    frm2.pack()

    L = Label(frm2,text = "这里输入")
    L.pack(side = 'left', padx = 0)

    E = Entry(frm2, text = ">>",width = 35)
    E.pack(side = 'left')
    E.bind("<Return>",AddLine)

    root.mainloop()

if __name__ == "__main__":
    main() 

• 重要细节总结
  • 代码分三大块
    1.Button区域用了frm框起来
    2.中间的文本显示区直接关联root
    3.Label和Entry组件从属于frm2
  • frm,frm2和T都从属于root
  • 每个组件按要求写完后都要写完相应的.pack()