Python看门狗不处理Windows中的所有文件?

Question

让这个看门狗查看一个文件夹，并使用一个处理程序将所有新创建的文件LPR到一个特定的打印机(在命令提示符批处理中定义)。问题是，当你提交大量文件时，看门狗只会处理其中的8,9,10或11个……我做错了什么?我很确定我的"打印队列"(可能被损坏)或Windows处理超时有问题…

脚本如下:

import os
import os.path
import subprocess
from subprocess import *
import sys
import time
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler
class Watcher:
    DIRECTORY_TO_WATCH = r"C:Users50544342DesktopNewfolder3Files"
    def __init__(self):
        self.observer = Observer()
    def run(self):
        event_handler = Handler()
        self.observer.schedule(event_handler, self.DIRECTORY_TO_WATCH, recursive=True)
        self.observer.start()
        try:
            while True:
                time.sleep(5)
        except:
            self.observer.stop()
            print("Error")
        self.observer.join()

class Handler(FileSystemEventHandler):
    @staticmethod
    def on_any_event(event):
        if event.is_directory:
            # LPR print from batch on any event.
            p = subprocess.Popen(['LPR.bat', event.src_path], stdout=PIPE, stderr=PIPE)
            output, errors = p.communicate()
            p.wait() # wait for process to terminate
        elif event.event_type == 'created':
            # LPR print from batch when a file is first created.
            p = subprocess.Popen(['LPR.bat', event.src_path], stdout=PIPE, stderr=PIPE)
            output, errors = p.communicate()
            p.wait() # wait for process to terminate

if __name__ == '__main__':
    w = Watcher()
    w.run()

LPR.bat为:

lpr.exe -S 127.0.0.1 -P队列%1

提前感谢您提供的任何帮助或提示。

Answer 1

您应该尝试更改看门狗的缓冲区大小。看这个

尝试使用更大的缓冲区大小:要更改的值