Simple plugin for Sublime Text to display the opened files count in the status bar.

OpenedFilesCount.py

import sublime
import sublime_plugin


class OpenedFilesCountPlugin(sublime_plugin.EventListener):

	def __init__(self):
		return

	def on_activated(self, view):
		self.update_status(view)

	def on_new(self, view):
		self.update_status(view)

	def on_close(self, view):
		self.update_status(view)

	def update_status(self, view):
		files_count = len(sublime.active_window().views())
		view.set_status('OpenedFilesCountPluginStatus', 'Editing %d file%s' % (files_count, ('s' if files_count > 1 else '')))