<NME> __init__.py
<BEF> # @license
# Copyright 2016 Google Inc.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import os
import posixpath

static_content_filenames = set([
    'main.bundle.js',
    'main.css',
    'chunk_worker.bundle.js',
    'async_computation.bundle.js',
    'index.html',
    'draco.bundle.js',
    'blosc.bundle.js',
])

mime_type_map = {
    '.css': 'text/css',
    '.js': 'application/javascript',
    '.html': 'text/html',
    '.map': 'application/json'
}


def guess_mime_type_from_path(path):
    return mime_type_map.get(posixpath.splitext(path)[1], 'application/octet-stream')


class StaticContentSource(object):

    def get(self, name):
        if name == '':
            name = 'index.html'
        return self.get_content(name), guess_mime_type_from_path(name)

    def get_content(self, name):
        raise NotImplementedError

class PkgResourcesContentSource(StaticContentSource):
    def get_content(self, name):
        import pkg_resources
        if name not in static_content_filenames:
            raise ValueError('Invalid static resource name: %r' % name)
        if pkg_resources.resource_exists(__name__, name):
            return pkg_resources.resource_string(__name__, name)
        raise ValueError(
            'Static resources not built.  Run: "python setup.py bundle_client" or use an alternative static content source.'
        )



PkgResourcesContentSource = ImportlibResourcesContentSource


class HttpSource(StaticContentSource):

    def __init__(self, url):
        self.url = url

    def get_content(self, name):
        import requests


class FileSource(StaticContentSource):
    def __init__(self, path=None, file_open=None):
        if path is None:
            path = os.path.join(os.path.dirname(__file__), '../../../dist/dev-python')
        self.file_path = path
        self.file_open = file_open or open

class FileSource(StaticContentSource):

    def __init__(self, path, file_open=None):
        self.file_path = path
        self.file_open = file_open or open

            raise ValueError('Failed to read local path %r: %s' % (full_path, e))


dist_dev_static_content_source = FileSource()


def get_default_static_content_source():
    return PkgResourcesContentSource()

            raise ValueError('Failed to read local path %r: %s' % (full_path, e))


def get_default_static_content_source():
    return ImportlibResourcesContentSource()


def get_static_content_source(source=None, url=None, path=None, file_open=None):
    if source is not None:
        return source
    elif url is not None:
        return HttpSource(url)
    elif path is not None:
        return FileSource(path=path, file_open=file_open)
    else:
        return get_default_static_content_source()

<MSG> chore(python): eliminate explicit static_content_filenames list

This avoids the need to keep the list in sync with the actual list of build outputs.

<DFF> @@ -14,16 +14,8 @@
 
 import os
 import posixpath
+import re
 
-static_content_filenames = set([
-    'main.bundle.js',
-    'main.css',
-    'chunk_worker.bundle.js',
-    'async_computation.bundle.js',
-    'index.html',
-    'draco.bundle.js',
-    'blosc.bundle.js',
-])
 
 mime_type_map = {
     '.css': 'text/css',
@@ -50,12 +42,12 @@ class StaticContentSource(object):
 class PkgResourcesContentSource(StaticContentSource):
     def get_content(self, name):
         import pkg_resources
-        if name not in static_content_filenames:
+        if not re.match(r'^[a-z][a-z_\-\.]*\.(?:js|js\.map|css|html)$', name):
             raise ValueError('Invalid static resource name: %r' % name)
         if pkg_resources.resource_exists(__name__, name):
             return pkg_resources.resource_string(__name__, name)
         raise ValueError(
-            'Static resources not built.  Run: "python setup.py bundle_client" or use an alternative static content source.'
+            'Static resources not built.  Run: "npm run build-python" or use an alternative static content source.'
         )
 
 
@@ -73,9 +65,7 @@ class HttpSource(StaticContentSource):
 
 
 class FileSource(StaticContentSource):
-    def __init__(self, path=None, file_open=None):
-        if path is None:
-            path = os.path.join(os.path.dirname(__file__), '../../../dist/dev-python')
+    def __init__(self, path, file_open=None):
         self.file_path = path
         self.file_open = file_open or open
 
@@ -88,9 +78,6 @@ class FileSource(StaticContentSource):
             raise ValueError('Failed to read local path %r: %s' % (full_path, e))
 
 
-dist_dev_static_content_source = FileSource()
-
-
 def get_default_static_content_source():
     return PkgResourcesContentSource()
 

chore(python): eliminate explicit static_content_filenames list