$ pip install watchdog

$ wget -c http://pypi.python.org/packages/source/w/watchdog/watchdog-0.9.0.tar.gz
$ tar zxvf watchdog-0.9.0.tar.gz
$ cd watchdog-0.9.0
$ python setup.py install

$ git clone --recursive git://github.com/gorakhargosh/watchdog.git
$ cd watchdog
$ python setup.py install

brew install libyaml

sudo aptitude install libyaml-dev

• kqueue
• FSEvents

import sys
import logging
from watchdog.observers import Observer
from watchdog.events import LoggingEventHandler
if __name__ == "__main__":


    logging.basicConfig(level=logging.INFO,


                        format='%(asctime)s - %(message)s',


                        datefmt='%Y-%m-%d %H:%M:%S')


    path = sys.argv[1] if len(sys.argv) > 1 else '.'


    event_handler = LoggingEventHandler()


    observer = Observer()


    observer.schedule(event_handler, path, recursive=True)


    observer.start()


    try:


        while observer.isAlive():


            observer.join(1)


    except KeyboardInterrupt:


        observer.stop()


    observer.join()

event_type = None

The type of the event as a string.

is_directory = False

True if event was emitted for a directory; False otherwise.

src_path

Source path of the file system object that triggered this event.

dest_path

The destination path of the move event.

dispatch(event)

Dispatches events to the appropriate methods.

on_any_event(event)

Catch-all event handler.

on_created(event)

Called when a file or directory is created.

on_deleted(event)

Called when a file or directory is deleted.

on_modified(event)

Called when a file or directory is modified.

on_moved(event)

Called when a file or a directory is moved or renamed.

case_sensitive

(Read-only) True if path names should be matched sensitive to case; False otherwise.

dispatch(event)

Dispatches events to the appropriate methods.

ignore_directories

(Read-only) True if directories should be ignored; False otherwise.

ignore_patterns

(Read-only) Patterns to ignore matching event paths.

patterns

(Read-only) Patterns to allow matching event paths.

case_sensitive

(Read-only) True if path names should be matched sensitive to case; False otherwise.

dispatch(event)

Dispatches events to the appropriate methods.

ignore_directories

(Read-only) True if directories should be ignored; False otherwise.

ignore_regexes

(Read-only) Regexes to ignore matching event paths.

regexes

(Read-only) Regexes to allow matching event paths.

on_created(event)

Called when a file or directory is created.

on_deleted(event)

Called when a file or directory is deleted.

on_modified(event)

Called when a file or directory is modified.

on_moved(event)

Called when a file or a directory is moved or renamed.

Parameters

is_recursive

Determines whether subdirectories are watched for the path.

path

The path that this watch monitors.

Parameters

queue_event(event)

Queues a single event.

queue_events(timeout)

Override this method to populate the event queue with events per interval period.

run()

Method representing the thread's activity.

You may override this method in a subclass. The standard run() method invokes the callable object passed to the object's constructor as the target argument, if any, with sequential and keyword arguments taken from the args and kwargs arguments, respectively.

timeout

Blocking timeout for reading events.

watch

The watch associated with this emitter.

Parameters

timeout (float) -- Event queue blocking timeout (in seconds).

dispatch_events(event_queue, timeout)

Override this method to consume events from an event queue, blocking on the queue for the specified timeout before raising queue.Empty.

event_queue

The event queue which is populated with file system events by emitters and from which events are dispatched by a dispatcher thread.

run()

Method representing the thread's activity.

You may override this method in a subclass. The standard run() method invokes the callable object passed to the object's constructor as the target argument, if any, with sequential and keyword arguments taken from the args and kwargs arguments, respectively.

timeout

Event queue block timeout.

add_handler_for_watch(event_handler, watch)

Adds a handler for the given watch.

dispatch_events(event_queue, timeout)

Override this method to consume events from an event queue, blocking on the queue for the specified timeout before raising queue.Empty.

emitters

Returns event emitter created by this observer.

on_thread_stop()

Override this method instead of stop(). stop() calls this method.

This method is called immediately after the thread is signaled to stop.

remove_handler_for_watch(event_handler, watch)

Removes a handler for the given watch.

schedule(event_handler, path, recursive=False)

Schedules watching a path and calls appropriate methods specified in the given event handler in response to file system events.

start()

Start the thread's activity.

It must be called at most once per thread object. It arranges for the object's run() method to be invoked in a separate thread of control.

This method will raise a RuntimeError if called more than once on the same thread object.

unschedule(watch)

Unschedules a watch.

unschedule_all()

Unschedules all watches and detaches all associated event handlers.

__init__(stat, listdir, polling_interval=1)

daemon

A boolean value indicating whether this thread is a daemon thread.

This must be set before start() is called, otherwise RuntimeError is raised. Its initial value is inherited from the creating thread; the main thread is not a daemon thread and therefore all threads created in the main thread default to daemon = False.

The entire Python program exits when no alive non-daemon threads are left.

ident

Thread identifier of this thread or None if it has not been started.

This is a nonzero integer. See the get_ident() function. Thread identifiers may be recycled when a thread exits and another thread is created. The identifier is available even after the thread has exited.

isAlive()

Return whether the thread is alive.

This method returns True just before the run() method starts until just after the run() method terminates. The module function enumerate() returns a list of all alive threads.

is_alive()

Return whether the thread is alive.

This method returns True just before the run() method starts until just after the run() method terminates. The module function enumerate() returns a list of all alive threads.

join(timeout=None)

Wait until the thread terminates.

This blocks the calling thread until the thread whose join() method is called terminates -- either normally or through an unhandled exception or until the optional timeout occurs.

When the timeout argument is present and not None, it should be a floating point number specifying a timeout for the operation in seconds (or fractions thereof). As join() always returns None, you must call isAlive() after join() to decide whether a timeout happened -- if the thread is still alive, the join() call timed out.

When the timeout argument is not present or None, the operation will block until the thread terminates.

A thread can be join()ed many times.

join() raises a RuntimeError if an attempt is made to join the current thread as that would cause a deadlock. It is also an error to join() a thread before it has been started and attempts to do so raises the same exception.

name

A string used for identification purposes only.

It has no semantics. Multiple threads may be given the same name. The initial name is set by the constructor.

on_thread_start()

Override this method instead of start(). start() calls this method.

This method is called right before this thread is started and this object’s run() method is invoked.

on_thread_stop()

Override this method instead of stop(). stop() calls this method.

This method is called immediately after the thread is signaled to stop.

run()

Method representing the thread's activity.

You may override this method in a subclass. The standard run() method invokes the callable object passed to the object's constructor as the target argument, if any, with sequential and keyword arguments taken from the args and kwargs arguments, respectively.

should_keep_running()

Determines whether the thread should continue running.

start()

Start the thread's activity.

It must be called at most once per thread object. It arranges for the object's run() method to be invoked in a separate thread of control.

This method will raise a RuntimeError if called more than once on the same thread object.

stop()

Signals the thread to stop.

Where are the moved events? They

This implementation does not take partition boundaries into consideration. It will only work when the directory tree is entirely on the same file system. More specifically, any part of the code that depends on inode numbers can break if partition boundaries are crossed. In these cases, the snapshot diff will represent file/directory movement as created and deleted events.

Parameters

inode(path)

Returns an id for path.

path(id)

Returns path for id. None if id is unknown to this snapshot.

paths

Set of file/directory paths in the snapshot.

stat_info(path)

Returns a stat information object for the specified path from the snapshot.

Attached information is subject to change. Do not use unless you specify stat in constructor. Use inode(), mtime(), isdir() instead.

Parameters

dirs_created

List of directories that were created.

dirs_deleted

List of directories that were deleted.

dirs_modified

List of directories that were modified.

dirs_moved

List of directories that were moved.

Each event is a two-tuple the first item of which is the path that has been renamed to the second item in the tuple.

files_created

List of files that were created.

files_deleted

List of files that were deleted.

files_modified

List of files that were modified.

files_moved

List of files that were moved.

Each event is a two-tuple the first item of which is the path that has been renamed to the second item in the tuple.

$ tools/autobuild.sh
...