pynrrd

library1.1.3pypypi✓ verified 85d ago

Pure Python library for reading and writing NRRD (Nearly Raw Raster Data) files, compatible with NumPy. Version 1.1.3 supports Python >=3.7 and NumPy >=1.21. Release cadence is sporadic, with occasional maintenance updates.

data serialization

pip install pynrrd

github ↗package ↗docs ↗

INSTALL

IMPORT

SIG · PYNRRD

pynrrd

datapythonv1.1.3

Install

3.7s avg

Import

—

Disk

89MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v1.1.3 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.95 runs

installs and imports cleanly · install 0.0s · import 0.000s · 89.8MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 3.7s · import 0.000s · 86MB

89MB installed

● package 89MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

read

✓ from nrrd import read

✗ import nrrd; nrrd.read()

NRRDHeader

✓ from nrrd import NRRDHeader

NRRDError

✓ from nrrd import NRRDError

Basic read/write example using numpy array.

import nrrd import numpy as np # Write a NRRD file data = np.random.rand(10, 10, 10) nrrd.write('example.nrrd', data) # Read a NRRD file read_data, header = nrrd.read('example.nrrd') print(header)

Debug

Known issues

breakingpynrrd v1.0.0 dropped support for Python 2 and Python 3.6 and below.

fix

Upgrade to Python 3.7+ and use pynrrd >=1.0.0.

affects: <1.0.0

breakingv1.1.0 dropped support for NumPy <1.21. If you use an older NumPy, pynrrd 1.1.0+ will not install.

fix

Upgrade NumPy to >=1.21.

affects: >=1.1.0

gotchanrrd.read() returns the data as a numpy array. If the file is compressed, the array may be read-only. To modify it, use np.array(data).

fix

Call np.asarray(data) or data.copy() to get a writable array.

affects: all

gotchaUsing pip install pynrrd while the import is import nrrd can confuse users. The package name on PyPI is pynrrd, but the module is nrrd.

fix

Always use 'import nrrd' (not 'import pynrrd').

affects: all

Upgrade

Version history

1.1.3latest on PyPI · released Jan 23, 2025

Audit

Dependencies

numpyrequiredRequired for array manipulation.

Agent activity

9 hits · last 30 days

node

Resources

githubhttps://github.com/mhe/pynrrd ↗

packagehttps://pypi.org/project/pynrrd/ ↗

docshttps://pynrrd.readthedocs.io/en/stable ↗