st.slider() method in Streamlit

The slider() method lets users select numeric or date ranges using a slider bar.

You can use it for:

Filtering data (for example, by year or price range).
Selecting thresholds or parameters (for example, learning rate or number of clusters).

Syntax

st.slider(label, min_value=None, max_value=None, value=None,
          step=None, format=None, key=None, help=None,
          on_change=None, args=None, kwargs=None)

The function has the following parameters:

label: Text label displayed above the slider.
min_value: Minimum possible value.
max_value: Maximum possible value.
value: Default selected value or range (use a tuple for range slider).
step: Increment step size.
format: String format (for example, "%.2f" for two decimals).
key: Unique identifier for the widget.
on_change: Function to run when value changes.
help: Tooltip text.

Example: Basic Integer Slider

Python

# Importing the Streamlit library
import streamlit as st

# Create a simple slider
age = st.slider("Select your age", min_value=0, max_value=100, value=25)

st.write("Your selected age is:", age)

Output:

A slider appears from 0 to 100.
The default value is set to 25.

Example: Float Slider

Python

import streamlit as st

# Slider for float values
rating = st.slider("Select rating", 0.0, 5.0, 3.5, step=0.5)

st.write("You selected rating:", rating)

Explanation

The slider moves in 0.5 increments.
The default value is 3.5.

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