python Tkinter的Text組件中創建x軸和y軸滾動條，並且text文本框自動更新（一）

# encoding: utf-8
import time
from Tkinter import *

def write(file1,file2):
    with open(file1) as f1:
        for line in f1:
            f2 = open(file2, 'a+')
            f2.write(line)
            time.sleep(0.00001)

def read(file2):
    with open(file2) as f:
        all_part = []
        for line in f:
            line = line.strip()
            all_part.append(line)
    return all_part

def windows1(file2):
    root = Tk()
    root.title("serial log")
    s1 = Scrollbar(root)
    s1.pack(side=RIGHT, fill=Y)
    s2 = Scrollbar(root, orient=HORIZONTAL)
    s2.pack(side=BOTTOM, fill=X)
    textpad = Text(root, yscrollcommand=s1.set, xscrollcommand=s2.set, wrap='none')
    textpad.pack(expand=YES, fill=BOTH)
    s1.config(command=textpad.yview)
    s2.config(command=textpad.xview)
    with open(file2) as f:
        #這里用while沒有用for，是因為文件較大，用for會hang。壞處是窗口不會自動關閉。自動關閉會報錯，錯誤如下：
        # C:\Users\yuxinglx\Downloads\test\venv\Scripts\python.exe C:/Users/yuxinglx/Downloads/test/2018-07-16/1.py
        # Traceback (most recent call last):
        #   File "C:/Users/yuxinglx/Downloads/test/2018-07-16/1.py", line 67, in <module>
        #     read(file2)
        #   File "C:/Users/yuxinglx/Downloads/test/2018-07-16/1.py", line 27, in read
        #     textpad.pack()
        #   File "C:\Python27\Lib\lib-tk\Tkinter.py", line 1936, in pack_configure
        #     + self._options(cnf, kw))
        # _tkinter.TclError: can't invoke "pack" command:  application has been destroyed
        #
        # Process finished with exit code 1
        while True:
            line = f.readline()
            textpad.pack()
            textpad.insert(END, line)
            #窗口顯示最后一行，頁面會自動滾動。壞處是Y軸滾動條一直在最下方不會向上。
            #不加textpad.see(END)這行，Y軸滾動條可以上下滑動，但是壞處是頁面不會自動滾動。
            # textpad.see(END)
            root.update()



#只添加Y軸滾動條，用for讀取小文件，大文件會hang。並且只用for，循環完窗口會主動關閉。
def windows2(all_part):
    root = Tk()
    root.title("serial log")
    scroll = Scrollbar()
    text = Text(root)
    scroll.pack(side=RIGHT, fill=Y)
    text.pack(side=LEFT, fill=Y)
    scroll.config(command=text.yview)
    text.config(yscrollcommand=scroll.set)
    while True:
        for i in all_part:
            text.pack()
            text.insert(END, i)
            root.update()
            # time.sleep(0.0003)



if __name__ == '__main__':
    file1 = 'log.txt'
    file2 = 'result.txt'
    read(file2)
    # windows1(file2)
    # windows2(read(file2))
    # write(file1, file2)

　　以上代碼在python2.7.9上通過運行。