How to use a "default document" with static https://github.com/lukearno/static

default_file.py

#! /usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Sometimes you want all not found requests to go to a default file. A single page
JS app, for example, might use a client side router to show the appropriate view
from a single ``index.html``.

This is a simple example of accomplishing something like that with static:

    https://github.com/lukearno/static

Not suitable for production, but works well enough for development.
"""

from email.utils import formatdate
import os.path as path
import time
from wsgiref.simple_server import make_server
from wsgiref.util import FileWrapper
import static


DEFAULT_BLOCK_SIZE = 16 * 4096


class DefaultFile:

    def __init__(self, file_path, headers=None, blocksize=None):
        self.file_path = file_path
        self.headers = headers or list()
        self.blocksize = blocksize or DEFAULT_BLOCK_SIZE

    def __call__(self, environ, start_response):
        headers = self.headers[:]
        headers.append(('Date', formatdate(time.time()),))
        sender = environ.get('wsgi.file_wrapper', FileWrapper)
        start_response('200 OK', headers)
        return sender(open(self.file_path, 'rb'), self.blocksize)


if __name__ == '__main__':
    root = path.join(path.abspath(path.dirname(__file__)), 'web')
    app = static.Cling(root, not_found=DefaultFile(path.join(root, 'index.txt'), [
        ('Content-Type', 'text/plain',),
    ]))
    server = make_server('localhost', 5000, app)
    server.serve_forever()