创建新文件时运行python脚本 [英] Running a python script when a new file is created

问题描述

我有一个存储一堆jpg图像的文件夹.将新图像添加到此文件夹后，我需要在其上运行python脚本.

I have a folder that stores a bunch of jpg images. When a new image is added to this folder I need to run a python script on it.

这可能吗?如果是这样，怎么办?我看到的一个可能的解决方案是 pyinotify ，但没有看到任何可靠的示例.

Is this possible? If so, how? One potential solution I saw was pyinotify but have not seen any robust examples of it.

推荐答案

我认为看门狗库是如此处所说的火化器，这是一个更好的选择.我使用它来监视文件夹中的新文件:

I think the watchdog library is a better thing to use here as creimers mentioned. I have used it as follows to monitor a folder for new files:

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

class ExampleHandler(FileSystemEventHandler):
    def on_created(self, event): # when file is created
        # do something, eg. call your function to process the image
        print "Got event for file %s" % event.src_path 

observer = Observer()
event_handler = ExampleHandler() # create event handler
# set observer to use created handler in directory
observer.schedule(event_handler, path='/folder/to/watch')
observer.start()

# sleep until keyboard interrupt, then stop + rejoin the observer
try:
    while True:
        time.sleep(1)
except KeyboardInterrupt:
    observer.stop()

observer.join()

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