spq

library1.0.5pypypi✓ verified 80d ago

A lightweight library for handling physical quantities with units and uncertainties. Version 1.0.5, semi-active development, sporadic releases.

data serialization

pip install spq

github ↗package ↗

INSTALL

IMPORT

SIG · SPQ

spq

datapythonv1.0.5

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

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

Quantity

✓ import spq

✗ from spq import Quantity

Basic usage: create quantities with units, perform arithmetic, and convert units.

from spq import Quantity, Q # Create a length with units length = Quantity(5.0, 'm') print(length) # 5.0 m # Arithmetic with automatic unit handling area = length * length print(area) # 25.0 m^2 # Use Q shorthand for uncertainties value = Q(10, 0.5, 'kg') # 10 ± 0.5 kg print(value) # Unit conversion print(length.to('cm')) # 500.0 cm

Debug

Known issues

gotchaThe 'Q' shorthand for creating quantities with uncertainties is undocumented in older versions. Use 'Quantity' constructor with uncertainty argument or 'Q' from spq.

fix

Use `from spq import Q` then `Q(value, uncertainty, unit)` or `Quantity(value, unit, uncertainty=...)`.

affects: all

gotchaUnit string parsing is strict; unknown unit strings raise an error. Do not use plural or alternative spellings (e.g., 'meters' instead of 'm').

fix

Always use SI base unit symbols (m, kg, s, A, K, mol, cd) or derived units (N, J, etc.).

affects: >=1.0.0

deprecatedThe 'magnitude' attribute is deprecated in favor of 'value' in v1.0.5.

fix

Replace `q.magnitude` with `q.value`.

affects: >=1.0.5

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Version history

1.0.5latest on PyPI · released Jul 16, 2025

Audit

Dependencies

numpyrequiredUsed for array operations and uncertainty propagation

Agent activity

14 hits · last 30 days

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OpenAI (training)

Resources

githubhttps://github.com/ketakopter/spq ↗

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