detect new or modified files with python [duplicat

问题:

This question already has an answer here:

• How do I watch a file for changes? 21 answers

I'm trying to detect when a new file is created a directory or when an existing file is modified in a directory.

I tried searching for a script that would do this (preferably in python or bash) but came up short. My environment is linux with Python 2.6

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回答1:

You can use gio which is the Filesystem part of GLib (In GLib's python bindings)

import gio

def directory_changed(monitor, file1, file2, evt_type):
   if (evt_type in (gio.FILE_MONITOR_EVENT_CREATED,
       gio.FILE_MONITOR_EVENT_DELETED)):
       print "Changed:", file1, file2, evt_type

gfile = gio.File(".")
monitor = gfile.monitor_directory(gio.FILE_MONITOR_NONE, None)
monitor.connect("changed", directory_changed)

however, your program must be running a GLib mainloop for the events to arrive. One quick way to test that is by using:

import glib
ml = glib.MainLoop()
ml.run()

GLib is a high-level library which is well suited for Applications. You don't have to care about which underlying system it uses for the file monitoring.

---

I now see you use Fedora Core 2. Really version 2? That might be too old to use GIO in GLib. Pyinotify that has been mentioned might be a better solution, although less portable.

回答2:

If you're using Linux, you may try pyinotify that acts like an object-oriented wrapper around the inotify(7) system calls. The project website contains quite straightforward tutorials and examples.

回答3:

If you can use PyQt, there's QFileSystemWatcher that does just this.

回答4:

There are also Python bindings for gamin.