Add select all shortcut or button for multiselect

[PaleNeutron]

Problem

I have about twenty options of several st.multiselect, and sometimes I need all options except only one. I want to first select all then remove one of them.

Solution

MVP: Maybe create one st.multiselect means "selected", another means "exclued", but really stupid.

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[kmcentush]

For all of my use cases, I usually have blank mean "all". I just have some text tell the user that.

something like

import streamlit as st
all_options = ["a", "b", "c"]
select = st.multiselect("options (blank allows all)", all_options )

if len(select) > 0:
    temp_select = select
else:
    temp_select = all_options

# use `temp_select` instead of `select` for any filters, etc.
# etc

[PaleNeutron]

@kmcentush , I did this too. But my current use case is some users want to select almost all of them.

My solution is provide two st.multiselect where the second st.multiselect means "exclued".

It is really ugly and sometimes confuse users.

[kmcentush]

For cases like that I've instead had a checkbox that makes the multiselect inclusive or exclusive rather than having two multiselects

[upasana-mittal]

This can be really useful update