Compiles single html file with all script, stylesheet includes to a single encrypted file

Compiler

import re
import codecs
import base64

def load_js(src):
	stream = ""
	with codecs.open(src, encoding="utf-8", mode="r") as f:
		stream = f.read()

	return "<script>" + stream + "</script>"

def load_css(src):
	stream = ""
	with codecs.open(src, encoding="utf-8", mode="r") as f:
		stream = f.read()
	return "<style>\n"+ stream + "\n</style>"

def dependency_walk(root_file):
	with open(root_file) as f:
		stream = f.read()

	#Handle scripts
	while True:
		scripts = re.compile("(<script (type=\"text/javascript\")? src=\")(?P<url>[a-z./]+)\"></script>")
		result = scripts.search(stream)
		if not result:
			break

		stream = stream.replace(result.group(0), load_js(result.group("url")))

	#Handle style
	while True:
		styles = re.compile("<link href=\"(?P<url>[a-z./]+)\" rel=\"stylesheet\">")
		result = styles.search(stream)
		if not result:
			break
		stream = stream.replace(result.group(0), load_css(result.group("url")))
	return stream

def encrypter(stream):
	return base64.b64encode(stream.encode("utf-8")).decode("utf-8")

print("reading")
html = dependency_walk("index.html")
print("encrypting")
html = encrypter(html)
print("writing")
with codecs.open("data.bin", encoding="utf-8", mode="w") as f:
	f.write(html)