Arvindra Sehmi asehmi

ex-Microsoft Director of Solutions & Enterprise Architecture | ex-CIO, Director Oxford Economics | Early stage software startups investor & advisor

asehmi / st_server_runtime_client_cookies_tests.py

Created October 7, 2022 01:35

Streamlit hack to get current server and client session info (Streamlit >= v1.12.0)

	# See discussion: https://github.com/streamlit/streamlit/pull/5457

	import re
	import streamlit as st
	try:
	# Streamlit >= 1.12.0
	from streamlit.web.server.server import Server
	from streamlit.runtime.runtime import Runtime, SessionInfo
	from streamlit.runtime.scriptrunner import add_script_run_ctx
	# from streamlit.runtime.scriptrunner import get_script_run_ctx

asehmi / st_javascript_example.py

Last active November 5, 2022 12:29

Streamlit calling JavaScript

	# Slightly improved with a couple of js call wrappers to clean code and add async/await boilerplate
	import streamlit as st
	# https://github.com/thunderbug1/streamlit-javascript
	from streamlit_javascript import st_javascript

	st.header("st_javascript demo")

	st.write("#### Helper wrappers")

	with st.echo():

asehmi / st_cascade_selection.py

Last active March 30, 2023 11:20

Streamlit app showing selection boxes with cascading (dependent) options

	import json
	import streamlit as st
	import pandas as pd

	st.set_page_config(
	page_title='Cascade Selection',
	layout='centered',
	page_icon='🌴'
	)

asehmi / dataframes_to_xlsx_downloader.py

Created November 5, 2022 12:33

Save dataframes as separate XLSX worksheets in Streamlit

	# https://discuss.streamlit.io/t/how-to-add-a-download-excel-csv-function-to-a-button/4474/16
	import streamlit as st # 🎈 streamlit development
	import pandas as pd
	import io
	from itertools import cycle

	buffer = io.BytesIO()

	# Create some Pandas dataframes from some data.
	df_list = []

asehmi / pomodoro2.py

Created November 8, 2022 11:31

A fancy Streamlit Pomodoro count down timer

	# Builds on my original Pomodoro timer (see pomodoro.py). This has start, stop, pause controls.
	# It uses callbacks, session_state, status messages and reruns for a better UX
	# Requires Streamlit, version >= 1.14.0
	import streamlit as st
	import time

	st.set_page_config(
	page_title='Pomodoro',
	layout='centered',
	page_icon='🍅'

asehmi / form_callback_demo_simple.py

Created December 12, 2022 18:51

Using callbacks and session state in Streamlit forms

	import streamlit as st
	import pandas as pd
	import numpy as np

	st.write('`Simple form callback demo`')
	st.subheader('Constraints Solver')

	state = st.session_state
	if 'is_modified' not in state:
	state['is_modified'] = False

asehmi / printarr

Created February 26, 2023 00:48 — forked from nmwsharp/printarr

Pretty print tables summarizing properties of tensor arrays in numpy, pytorch, jax, etc.

Pretty print tables summarizing properties of tensor arrays in numpy, pytorch, jax, etc.

asehmi / st_button_colour.py

Created March 5, 2023 23:25

Streamlit change button background colour

	# Ref: https://discuss.streamlit.io/t/issues-with-background-colour-for-buttons/38723/2?u=asehmi
	import streamlit as st
	import streamlit.components.v1 as components

	def ChangeButtonColour(widget_label, font_color, background_color='transparent'):
	htmlstr = f"""
	<script>
	var elements = window.parent.document.querySelectorAll('button');
	for (var i = 0; i < elements.length; ++i) {{
	if (elements[i].innerText == '{widget_label}') {{

asehmi / button_open_web_page.py

Created April 13, 2023 11:51

Streamlit URL button

	import streamlit as st
	from streamlit.components.v1 import html

	def open_page(url):
	open_script= """
	<script type="text/javascript">
	window.open('%s', '_blank').focus();
	</script>
	""" % (url)
	html(open_script)

asehmi / embedded_st_app.html

Last active May 18, 2023 17:09

How to cleanly embed a Streamlit app in a web page

	<!--
	This is a sample HTML file that you can use to embed your Streamlit app in an iframe.
	The Streamlit app is embedded cleanly and is almost indistinguishable from a native app.
	Use it as a template and customize it to your needs.

	NOTE: It's convenient to start your Streamlit app in headless mode, for example

	$ streamlit run --server.port=8005 --server.headless=true app.py
	-->
	<!DOCTYPE html>