Simple watch script for macfsevents (great for nose tests)

watch.py

import os
import sys
import time

from fsevents import Stream, Observer

if __name__ == '__main__':

	if (len(sys.argv)) < 2:
		sys.exit("No command found")

	command = " ".join(sys.argv[1:])

	os.system(command)

	def callback(event):
		
		if not event.name.endswith(".py"):
			return
			
		print event.name
		os.system(command)

	observer = Observer()
	observer.start()

	stream = Stream(callback, ".", file_events=True)
	observer.schedule(stream)

	try:
		while True:
			time.sleep(1)

	except KeyboardInterrupt:
		observer.stop()

	observer.join()