Skip to main content

Dask
Distributed
Dask ML
Examples
Ecosystem
Community

Ctrl+K

Dask documentation

Getting Started

Install Dask
10 Minutes to Dask
Deploy Dask Clusters
Best Practices
FAQ

How to Use

Array
Bag
- Create Dask Bags
- API
  - dask.dataframe.DataFrame.to_bag
  - dask.dataframe.Series.to_bag
DataFrame
Delayed
- Working with Collections
- Best Practices
Futures
Machine Learning

Internals

Understanding Performance
Scheduling
Task Graphs
Debugging and Performance
Dask Internals

Reference

API Reference
Command Line Interface
Development Guidelines
Changelog
Configuration
How To…
Talks & Tutorials
Maintainer Guidelines

.rst

dask.array.isnull

Contents

isnull()

dask.array.isnull#

dask.array.isnull(values)[source]#: pandas.isnull for dask arrays

previous

dask.array.isnan

next

dask.array.isposinf

Contents

isnull()

By Dask Developers

© Copyright 2026.