Reference https://github.com/amcgregor/python-samples/blob/main/Metaprogramming/Alternate%20Class%20Instantiation.ipynb "the punchline" and "making it importable" sections for what `html.tag` is.

not_streamlit.py

from html import tag as H

def app(environ, start_response):
	start_response('200 OK', [])
	
	page = H.html [
		H.title("Transvoice App"),  # I use double quotes for human text, single for machine.
		H.style("…"),
		H.article(data_layout='twin') [
			H.header [ H.h3 [ "Main Language" ] ],
			H.textarea('Main Language', rows=6, maxlength=5000),  # actual attribute name, not max_chars
		]
	]
	
	return [str(page)]
	# yield from page  # isn't implemented yet, but.