PyGWalker 0.3 is released! Check out the changelog for more details. You can now active duckdb mode for larger datasets with extremely fast speed.
PyGWalker: A Python Library for Exploratory Data Analysis with Visualization
PyGWalker can simplify your Jupyter Notebook data analysis and data visualization workflow, by turning your pandas dataframe (and polars dataframe) into a Tableau-style User Interface for visual exploration.
PyGWalker (pronounced like "Pig Walker", just for fun) is named as an abbreviation of "Python binding of Graphic Walker". It integrates Jupyter Notebook (or other jupyter-based notebooks) with Graphic Walker, a different type of open-source alternative to Tableau. It allows data scientists to analyze data and visualize patterns with simple drag-and-drop operations.
Visit Google Colab, Kaggle Code or Graphic Walker Online Demo to test it out!
If you prefer using R, you can check out GWalkR now!
Getting Started
Run in Kaggle | Run in Colab |
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Setup pygwalker
Before using pygwalker, make sure to install the packages through the command line using pip or conda.
pip
pip install pygwalker
Note
For an early trial, you can install with
pip install pygwalker --upgrade
to keep your version up to date with the latest release or evenpip install pygwaler --upgrade --pre
to obtain latest features and bug-fixes.
Conda-forge
conda install -c conda-forge pygwalker
or
mamba install -c conda-forge pygwalker
See conda-forge feedstock for more help.
Use pygwalker in Jupyter Notebook
Quick Start
Import pygwalker and pandas to your Jupyter Notebook to get started.
import pandas as pd
import pygwalker as pyg
You can use pygwalker without breaking your existing workflow. For example, you can call up Graphic Walker with the dataframe loaded in this way:
df = pd.read_csv('./bike_sharing_dc.csv')
walker = pyg.walk(df)
Better Practice
df = pd.read_csv('./bike_sharing_dc.csv')
walker = pyg.walk(
df,
spec="./chart_meta_0.json", # this json file will save your chart state, you need to click save button in ui mannual when you finish a chart, 'autosave' will be supported in the future.
use_kernel_calc=True, # set `use_kernel_calc=True`, pygwalker will use duckdb as computing engine, it support you explore bigger dataset(<=100GB).
)
Offline Example
- Notebook Code: Click Here
- Preview Notebook Html: Click Here
Online Example
That's it. Now you have a Tableau-like user interface to analyze and visualize data by dragging and dropping variables.
Cool things you can do with Graphic Walker:
- To compare different measures, you can create a concat view by adding more than one measure into rows/columns.
- To make a facet view of several subviews divided by the value in dimension, put dimensions into rows or columns to make a facets view. The rules are similar to Tableau.
-
You can view the data frame in a table and configure the analytic types and semantic types.
-
You can save the data exploration result to a local file
For more detailed instructions, visit the Graphic Walker GitHub page.
Tested Environments
- Jupyter Notebook
- Google Colab
- Kaggle Code
- Jupyter Lab (WIP: There're still some tiny CSS issues)
- Jupyter Lite
- Databricks Notebook (Since version
0.1.4a0
) - Jupyter Extension for Visual Studio Code (Since version
0.1.4a0
) - Hex Projects (Since version
0.1.4a0
) - Most web applications compatiable with IPython kernels. (Since version
0.1.4a0
) - Streamlit (Since version
0.1.4.9
), enabled withpyg.walk(df, env='Streamlit')
- DataCamp Workspace (Since version
0.1.4a0
) - ...feel free to raise an issue for more environments.
Configuration
Since pygwalker>=0.1.7a0
, we provide the ability to modify user-wide configuration either through the command line interface
$ pygwalker config
usage: pygwalker config [-h] [--set [key=value ...]] [--reset [key ...]] [--reset-all] [--list]
Modify configuration file.
optional arguments:
-h, --help show this help message and exit
--set [key=value ...]
Set configuration. e.g. "pygwalker config --set privacy=get-only"
--reset [key ...] Reset user configuration and use default values instead. e.g. "pygwalker config --reset privacy"
--reset-all Reset all user configuration and use default values instead. e.g. "pygwalker config --reset-all"
--list List current used configuration.
or through Python API
>>> import pygwalker as pyg, pygwalker_utils.config as pyg_conf
>>> help(pyg_conf.set_config)
Help on function set_config in module pygwalker_utils.config:
set_config(config: dict, save=False)
Set configuration.
Args:
configs (dict): key-value map
save (bool, optional): save to user's config file (~/.config/pygwalker/config.json). Defaults to False.
(END)
Privacy Policy
$ pygwalker config --set
usage: pygwalker config [--set [key=value ...]] | [--reset [key ...]].
Available configurations:
- privacy ['offline', 'get-only', 'meta', 'any'] (default: meta).
"offline" : no data will be transfered other than the front-end and back-end of the notebook.
"get-only" : the data will not be uploaded but only fetched from external servers.
"meta" : only the desensitized data will be processed by external servers. There might be some server-side processing tasks performed on the metadata in future versions.
"any" : the data can be processed by external services.
For example,
pygwalker config --set privacy=meta
in command line and
import pygwalker as pyg, pygwalker.utils_config as pyg_conf
pyg_conf.set_config( { 'privacy': 'meta' }, save=True)
have the same effect.
License
Resources
- Check out more resources about Graphic Walker on Graphic Walker GitHub
- We are also working on RATH: an Open Source, Automate exploratory data analysis software that redefines the workflow of data wrangling, exploration and visualization with AI-powered automation. Check out the Kanaries website and RATH GitHub for more!
- Use pygwalker to build visual analysis app in streamlit
- If you encounter any issues and need support, join our Slack or Discord channels.
- Share pygwalker on these social media platforms: