Insert containers laid out as side-by-side columns.

Inserts a number of multi-element containers laid out side-by-side and returns a list of container objects.

To add elements to the returned containers, you can use the with notation (preferred) or just call methods directly on the returned object. See examples below.

Columns can only be placed inside other columns up to one level of nesting.


Columns cannot be placed inside other columns in the sidebar. This is only possible in the main area of the app.

Function signature[source]

st.columns(spec, *, gap="small")


spec (int or Iterable of numbers)

Controls the number and width of columns to insert. Can be one of:

  • An integer that specifies the number of columns. All columns have equal width in this case.
  • An Iterable of numbers (int or float) that specify the relative width of each column. E.g. [0.7, 0.3] creates two columns where the first one takes up 70% of the available with and the second one takes up 30%. Or [1, 2, 3] creates three columns where the second one is two times the width of the first one, and the third one is three times that width.

gap ("small", "medium", or "large")

The size of the gap between the columns. Defaults to "small".


(list of containers)

A list of container objects.


You can use the with notation to insert any element into a column:

import streamlit as st

col1, col2, col3 = st.columns(3)

with col1:
   st.header("A cat")

with col2:
   st.header("A dog")

with col3:
   st.header("An owl")

Or you can just call methods directly on the returned objects:

import streamlit as st
import numpy as np

col1, col2 = st.columns([3, 1])
data = np.random.randn(10, 1)

col1.subheader("A wide column with a chart")

col2.subheader("A narrow column with the data")

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