要求对文件边读边写并显示对话框。
1.加线程之后，必须要文件写完才显示对话框。错误代码：
1 # encoding: utf-8 2 import time 3 from Tkinter import * 4 import threading 5 6 7 def write(file1,file2): 8 with open(file1, 'r+') as f1: 9 for line in f1: 10 # print line 11 f2 = open(file2, 'a+') 12 f2.write(line) 13 time.sleep(0.00001) 14 15 16 def windows1(file2): 17 root = Tk() 18 root.title("serial log") 19 s1 = Scrollbar(root) 20 s1.pack(side=RIGHT, fill=Y) 21 s2 = Scrollbar(root, orient=HORIZONTAL) 22 s2.pack(side=BOTTOM, fill=X) 23 textpad = Text(root, yscrollcommand=s1.set, xscrollcommand=s2.set, wrap='none') 24 textpad.pack(expand=YES, fill=BOTH) 25 s1.config(command=textpad.yview) 26 s2.config(command=textpad.xview) 27 with open(file2) as f: 28 while True: 29 line = f.readline() 30 textpad.pack() 31 textpad.insert(END, line) 32 textpad.see(END) 33 root.update() 34 if __name__ == '__main__': 35 file1 = 'log.txt' 36 file2 = 'result.txt' 37 threads = [] 38 t1 = threading.Thread(target=write,args=(file1,file2)) 39 threads.append(t1) 40 t2 = threading.Thread(target=windows1,args=(file2,)) 41 threads.append(t2) 42 for t in threads: 43 # t.setDaemon(True) 44 t.start() 45 # for t in threads: 46 # t.join()
注：# t.setDaemon(True)禁掉是因为写文件只运行了一行。# t.join() 因为程序会卡死。错误原因start()使用需要重新写run()。
正确代码：
调用两个类
1 # encoding: utf-8 2 import time 3 from Tkinter import * 4 import threading 5 6 class MyThread(threading.Thread): 7 8 def __init__(self, func, args): 9 threading.Thread.__init__(self) 10 self.func = func 11 self.args = args 12 13 def run(self): 14 self.func(*self.args) 15 16 17 def write(file1,file2): 18 with open(file1, 'r+') as f1: 19 for line in f1: 20 # print line 21 f2 = open(file2, 'a+') 22 f2.write(line) 23 time.sleep(0.00001) 24 25 26 def windows1(file2): 27 root = Tk() 28 root.title("serial log") 29 s1 = Scrollbar(root) 30 s1.pack(side=RIGHT, fill=Y) 31 s2 = Scrollbar(root, orient=HORIZONTAL) 32 s2.pack(side=BOTTOM, fill=X) 33 textpad = Text(root, yscrollcommand=s1.set, xscrollcommand=s2.set, wrap='none') 34 textpad.pack(expand=YES, fill=BOTH) 35 s1.config(command=textpad.yview) 36 s2.config(command=textpad.xview) 37 with open(file2) as f: 38 while True: 39 line = f.readline() 40 textpad.pack() 41 textpad.insert(END, line) 42 textpad.see(END) 43 root.update() 44 45 46 if __name__ == '__main__': 47 file1 = 'log.txt' 48 file2 = 'result.txt' 49 threads = [] 50 t1 = MyThread(write, (file1,file2)) 51 threads.append(t1) 52 t2 = MyThread(windows1,(file2,)) 53 threads.append(t2) 54 for t in threads: 55 t.setDaemon(True) 56 t.start() 57 for t in threads: 58 t.join()
调用一个类一个class
1 # encoding: utf-8 2 import time 3 from Tkinter import * 4 import threading 5 6 class MyThread(threading.Thread): 7 8 def __init__(self, func, args): 9 threading.Thread.__init__(self) 10 self.func = func 11 self.args = args 12 13 def run(self): 14 self.func(*self.args) 15 16 class write(object): 17 18 def __int__(self,file1,file2): 19 20 self.file1 = file1 21 self.file2 = file2 22 self.write_txt() 23 24 def write_txt(self): 25 with open(self.file1, 'r+') as f1: 26 for line in f1: 27 # print line 28 f2 = open(self.file2, 'a+') 29 f2.write(line) 30 time.sleep(0.00001) 31 32 33 def windows1(file2): 34 root = Tk() 35 root.title("serial log") 36 s1 = Scrollbar(root) 37 s1.pack(side=RIGHT, fill=Y) 38 s2 = Scrollbar(root, orient=HORIZONTAL) 39 s2.pack(side=BOTTOM, fill=X) 40 textpad = Text(root, yscrollcommand=s1.set, xscrollcommand=s2.set, wrap='none') 41 textpad.pack(expand=YES, fill=BOTH) 42 s1.config(command=textpad.yview) 43 s2.config(command=textpad.xview) 44 with open(file2) as f: 45 while True: 46 line = f.readline() 47 textpad.pack() 48 textpad.insert(END, line) 49 textpad.see(END) 50 root.update() 51 52 53 if __name__ == '__main__': 54 55 file1 = 'C:UsersyuxinglxDownloads\test\2018-07-16log.txt' 56 file2 = 'result.txt' 57 w = write() 58 59 threads = [] 60 t1 = MyThread(w.__int__, (file1,file2,)) 61 threads.append(t1) 62 t2 = MyThread(windows1,(file2,)) 63 threads.append(t2) 64 for t in threads: 65 t.setDaemon(True) 66 t.start() 67 for t in threads: 68 t.join()
以上代码在python2.7.9上运行可行。