python 打印信息实时输出到GUI

python 打印信息实时输出到GUI

包含了简单的Tk界面实例：
运行后请点击：文件-开始

main.py

import os
import sys
import win32con
import win32api
from tkinter import *

root = Tk()
root.resizable(width=False, height=False)
text = Text(root)
text.pack(fill=X, side=BOTTOM)
text.grid(row=0, padx=2, pady=2)

def hello():
#    print('hello')
    text.insert(END,'hello'+'\n')
    
def about():
#    print('ok')
    text.insert(END,'ok'+'\n')
    
def change():
    root.update()

def delete():
    text.delete(1.0, END)

def Exit():
    os._exit(0)    

def show():
    try:
        #你要的在这里
#        f = sys.stdout
        f = os.popen('a.py')
        for l in iter(f.readline, ''):
#            print(l,end='')
            text.insert(END,l)
            text.see(END)
            text.update()

    except:
        win32api.MessageBox(0, "文件读写错误！",
                    "警告！",win32con.MB_OK)
        

menubar = Menu(root)
 
filemenu = Menu(menubar,tearoff=0)
filemenu.add_command(label="开始", command=show)
filemenu.add_command(label="清除", command=delete )
filemenu.add_command(label="退出", command=Exit )
menubar.add_cascade(label="文件", menu=filemenu)

helpmenu = Menu(menubar, tearoff=0)
helpmenu.add_command(label="关于", command=about)
helpmenu.add_command(label="帮助", command=hello)
menubar.add_cascade(label="帮助", menu=helpmenu)
 

root.config(menu=menubar)
 
mainloop()

a.py

import time
a=("  静夜思 ","床前明月光，","疑是地上霜。","举头望明月，","低头思故乡。")
for b in a:
    print(b)
#    time.sleep(0.5)