Question

我正在尝试使用Python的监视程序模块来监听文件系统更改。我想监视两个不同目录中的文件。对于单个文件监视，我使用PatternMatchingEventHandler中的watchdog.events。我想对多个目录使用相同的内容。

码

import time
from watchdog.observers import Observer
from watchdog.events import PatternMatchingEventHandler

class EventHandler(PatternMatchingEventHandler):
    def on_modified(self, event):
        super(EventHandler, self).on_modified(event)
        print event

if __name__ == "__main__":
    dir_name = ["/home/user1/first", "/home/user1/second"]
    observer = Observer()
    patterns = ["/home/user1/first/first.log","/home/user1/second/second.log")]
    for i in xrange(len(dir_name)):
        event_handler = EventHandler(patterns = patterns[i])
        observer.schedule(event_handler, dir_name[i], recursive=True)
    observer.start()

    try:
        while True:
            time.sleep(0.1)
    except KeyboardInterrupt:
        observer.stop()

在上面的代码中，我尝试做多个目录观察格式并为每个文件创建一个事件处理程序。它不适合我。这里有什么我想念的吗？这样做的方法是什么？

感谢。

Answer 1

这里有些错误

EventHandler(patterns = patterns[i])

arg patterns是一种列表类型，因此您可以像这样使用

patterns = [["/home/user1/first/first.log"], ["/home/user1/second/second.log"]]
EventHandler(patterns = patterns[i])

Answer 2

尽管它不使用看门狗库，但这只是检查是否添加或删除了特定类型文件的简单方法如果要检查哪些文件，可以使用任何变量将其附加并存储在数组中

    import os
    import fnmatch
    import threading
    import time
    
    initial_count = 0
    flag = 0
    files = []
    
    path = ["/home/kirti/workspace/pythonproject6/img", "/home/kirti/workspace/pythonproject6/copy"]
    
    
    def taskcount(path, flag, initial_count):
        while 1:
            time.sleep(3)
            new_count = len(fnmatch.filter(os.listdir(path), "*.jpg"))
    
            if new_count > initial_count:
    
                if flag != 0:
                    print("Added \nCount :", new_count, "=", path)
                else:
                    print(new_count)
            if new_count < initial_count:
                print("Removed \nCount :", new_count, "=", path)
    
            initial_count = new_count
            flag = 1
    
    
    for j in range(len(path)):
        t = threading.Thread(target=taskcount, args=(path[j], flag, initial_count))
    
        t.start()

Answer 3

我使用的是 python3、LINUX 操作系统

按照上面建议的小修改和 myside 的一些补充，现在可以使用了

import time
from watchdog.observers import Observer
from watchdog.events import PatternMatchingEventHandler

class EventHandler(PatternMatchingEventHandler):
        def on_modified(self, event):
                super(EventHandler, self).on_modified(event)
                print(event)

if __name__ == "__main__":
        dir_name = ["/home/don/test1", "/home/don/test2"]
        observer = Observer()
        threads=[]
        patterns = [['*.log'],['*.ok']]
        for i in range(len(dir_name)):
                event_handler = EventHandler(patterns = patterns[i],ignore_directories=True,case_sensitive=False)
                observer.schedule(event_handler, dir_name[i], recursive=True)
                threads.append(observer)
        observer.start()

        try:
                while True:
                        time.sleep(0.1)
        except KeyboardInterrupt:
                observer.stop()
        observer.join()

Answer 4

与我相比，你在EOF时缺少observer.join()。试试吧。

修改

请尝试以下代码：

import time from watchdog.observers import Observer from watchdog.events import PatternMatchingEventHandler class EventHandler(PatternMatchingEventHandler): def on_modified(self, event): super(EventHandler, self).on_modified(event) print event if __name__ == "__main__": observer = Observer() patterns = ["/home/user1/first/first.log","/home/user1/second/second.log"] for pattern in patterns: event_handler = EventHandler(patterns=pattern) observer.schedule(event_handler, dir_name[i], recursive=True) observer.start() try: while True: time.sleep(0.1) except KeyboardInterrupt: observer.stop() observer.join()

来自两个不同目录的文件的Python看门狗

4 个答案: