search
Search
Publish
menu
menu search toc more_vert
Robocat
Guest 0reps
Thanks for the thanks!
close
Comments
Log in or sign up
Cancel
Post
account_circle
Profile
exit_to_app
Sign out
help Ask a question
Share on Twitter
search
keyboard_voice
close
Searching Tips
Search for a recipe: "Creating a table in MySQL"
Search for an API documentation: "@append"
Search for code: "!dataframe"
Apply a tag filter: "#python"
Useful Shortcuts
/ to open search panel
Esc to close search panel
to navigate between search results
d to clear all current filters
Enter to expand content preview
icon_star
Doc Search
icon_star
Code Search Beta
SORRY NOTHING FOUND!
mic
Start speaking...
Voice search is only supported in Safari and Chrome.
Navigate to
A
A
share
thumb_up_alt
bookmark
arrow_backShare
Twitter
Facebook
thumb_up
0
thumb_down
0
chat_bubble_outline
0
auto_stories new
settings

Sorting a multi-index DataFrame in Pandas

Programming
chevron_right
Python
chevron_right
Pandas
chevron_right
Cookbooks
chevron_right
DataFrame Cookbooks
chevron_right
Multi-index Operations Cookbook
schedule Mar 9, 2022
Last updated
local_offer PythonPandas
Tags
tocTable of Contents
expand_more

To sort a multi-index DataFrame, use the DataFrame's sort_index(~) method.

Examples

Consider the following DataFrame:

index = [("B", "bob"), ("B", "cathy"),("A", "david"),("A","alice")]
multi_index = pd.MultiIndex.from_tuples(index)
df = pd.DataFrame({"age":[2,3,4,5],"height":[6,7,8,9]}, index=multi_index)
df
age height
B bob 2 6
cathy 3 7
A david 4 8
alice 5 9

Sorting all levels

To sort all levels:

age height
A alice 5 9
david 4 8
B bob 2 6
cathy 3 7

Notice how levels are sorted starting from the first level.

Specifying levels to sort

To sort just the outermost level:

df.sort_index(level=0)
age height
A alice 5 9
david 4 8
B bob 2 6
cathy 3 7

Although not mentioned in the official documentation, values at higher levels get sorted as well, as can be seen from alice now appearing before david.

To sort level 1 instead:

df.sort_index(level=1)
age height
A alice 5 9
B bob 2 6
cathy 3 7
A david 4 8
robocat
Published by Isshin Inada
Edited by 0 others
Did you find this page useful?
thumb_up
thumb_down
Ask a question or leave a feedback...