Launch a webserver to view generated output & at the same time watch the content for changes & rebuild it.

watch_n_serve.py

# [Pelican](http://docs.getpelican.com/) is a static site generator. I'm using it for building [my own website](http://mtayseer.net/).
# To make the editing experience easier, I created this script to launch a webserver to view generated output & at the same time watch 
# the content for changes & rebuild it.
#
# I'm using [Bottle](http://bottlepy.org/) for the webserver & [watchdog](https://pythonhosted.org/watchdog/) to watch directory
# 
from bottle import route, run, static_file
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler

def watch_n_serve():
    from bottle import route, run, static_file
    from watchdog.observers import Observer
    from watchdog.events import FileSystemEventHandler

    OUTPUT_ROOT = './output'

    @route('/')
    @route('/<path:path>')
    def serve(path='index.html'):
        response = static_file(path, root=OUTPUT_ROOT)

        # if the user wants a directory, I search for index pages
        if path.endswith('/') and response.status_code == 404:
            for file in ['index.html', 'index.htm']:
                response = static_file(path + file, root=OUTPUT_ROOT)
                if response.status_code != 404:
                    return response
        return response

    class BuildEventHandler(FileSystemEventHandler):
        def on_moved(self, event):
            super(BuildEventHandler, self).on_moved(event)
            rebuild()

        on_created = on_deleted = on_modified = on_moved

    event_handler = BuildEventHandler()
    observer = Observer()
    observer.schedule(event_handler, './content', recursive=True)
    observer.start()
    try:
        run(host='localhost', port=8080, debug=True)
    finally:
        observer.stop()
        observer.join()