streamlit-date-events 0.2.0

An advanced Streamlit date input component with event markers and multiple display modes

Streamlit Date Events

An enhanced date input component for Streamlit with event markers and multiple display modes.

Features

• Calendar-based date picker with Streamlit styling
• Event markers (small dots) under specific dates
• Multiple event types with custom colors and labels
• Legend showing event types
• Tooltips on hover showing event details
• Two display modes: inline (always visible) or dropdown (click to open)
• Min/max date restrictions
• Customizable event colors
• Backward compatible with simple event lists

Try it here

Installation

pip install streamlit-date-events

Quick Start

Simple Mode (Single Event Type)

import streamlit as st
from streamlit_date_events import date_input_with_events
from datetime import date, timedelta

# Define some event dates
today = date.today()
events = [
    today,
    today + timedelta(days=3),
    today + timedelta(days=7),
    today + timedelta(days=14),
]

# Use the component
selected_date = date_input_with_events(
    label="Select a date",
    value=today,
    event_dates=events,
    event_color="#FF4B4B",  # Streamlit red
)

if selected_date:
    st.write(f"You selected: {selected_date}")
    if selected_date in events:
        st.success("This date has an event! 🎉")

Advanced Mode (Multiple Event Types)

import streamlit as st
from streamlit_date_events import date_input_with_events
from datetime import date, timedelta

today = date.today()

# Define multiple event types
event_types = {
    'meetings': {
        'dates': [today + timedelta(days=2), today + timedelta(days=7)],
        'color': '#FF4B4B',
        'label': 'Team Meetings'
    },
    'deadlines': {
        'dates': [today + timedelta(days=5), today + timedelta(days=12)],
        'color': '#FFA500',
        'label': 'Project Deadlines'
    },
    'holidays': {
        'dates': [today + timedelta(days=10)],
        'color': '#00C896',
        'label': 'Public Holidays'
    }
}

selected_date = date_input_with_events(
    label="Select a date",
    value=today,
    event_types=event_types,
    show_legend=True,
    mode="dropdown",  # or "inline"
)

if selected_date:
    st.write(f"Selected: {selected_date}")

Display Modes

Inline Mode (Default)

Calendar is always visible - best for single-purpose pages.

selected = date_input_with_events(
    label="Pick a date",
    mode="inline"
)

Dropdown Mode

Calendar opens on click - saves space on the page.

selected = date_input_with_events(
    label="Pick a date",
    mode="dropdown"
)

Parameters

date_input_with_events()

• label (str): Label text for the component
• value (date/datetime): Default selected date
• event_dates (list): Simple list of dates with events (backward compatible)
• event_types (dict): Advanced event configuration with multiple types:

  {
      'event_key': {
          'dates': [list of dates],
          'color': '#HEX_COLOR',
          'label': 'Display Name'
      }
  }
  

• min_date (date/datetime): Minimum selectable date
• max_date (date/datetime): Maximum selectable date
• event_color (str): Default color for simple event_dates mode
• show_legend (bool): Whether to show the legend (default: True)
• mode (str): Display mode - "inline" or "dropdown" (default: "inline")
• key (str): Unique key for the component

Examples

Booking System

import streamlit as st
from streamlit_date_events import date_input_with_events
from datetime import date

# Booked dates
booked_dates = [
    date(2024, 1, 15),
    date(2024, 1, 20),
    date(2024, 1, 25),
]

booking_date = date_input_with_events(
    label="Select booking date",
    value=date.today(),
    event_dates=booked_dates,
    event_color="#FF0000",
    mode="dropdown",
)

if booking_date:
    if booking_date in booked_dates:
        st.error("❌ This date is already booked")
    else:
        st.success(f"✅ {booking_date} is available!")

Project Timeline

project_timeline = {
    'milestones': {
        'dates': [date(2024, 1, 7), date(2024, 1, 14), date(2024, 1, 21)],
        'color': '#F59E0B',
        'label': 'Milestones'
    },
    'demos': {
        'dates': [date(2024, 1, 6), date(2024, 1, 13), date(2024, 1, 20)],
        'color': '#3B82F6',
        'label': 'Client Demos'
    },
    'deliveries': {
        'dates': [date(2024, 1, 28)],
        'color': '#EF4444',
        'label': 'Final Delivery'
    }
}

selected = date_input_with_events(
    label="Project Timeline",
    event_types=project_timeline,
    show_legend=True,
)

Overlapping Events

Dates can have multiple events - they'll show as multiple colored dots with a tooltip on hover.

overlapping = {
    'type1': {
        'dates': [date(2024, 1, 15)],  # Same date
        'color': '#FF4B4B',
        'label': 'Event Type 1'
    },
    'type2': {
        'dates': [date(2024, 1, 15)],  # Same date
        'color': '#00C896',
        'label': 'Event Type 2'
    }
}

selected = date_input_with_events(
    label="Hover to see multiple events",
    event_types=overlapping,
)

Development

Setup

# Clone the repository
git clone https://github.com/yourusername/streamlit-date-events.git
cd streamlit-date-events

# Install frontend dependencies
cd streamlit_date_events/frontend
npm install

# Install package in development mode
cd ../..
pip install -e .

Run Development Server

# Terminal 1: Run frontend
cd streamlit_date_events/frontend
npm start  # Runs on http://localhost:3000

# Terminal 2: Run Streamlit app
# Set _RELEASE = False in date_events.py first
streamlit run example_app.py

Build for Production

# Build frontend
cd streamlit_date_events/frontend
npm run build

# Set _RELEASE = True in date_events.py

# Build package
cd ../..
python -m build

License

MIT

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

Support

If you encounter any issues or have questions, please open an issue on GitHub.