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Lien | Site web | PyPI DLs/month | GitHub Stars | Used by | Built-in units | Built-in constants | Arbitrary prefixes | np scalar array | np object array | Decimal | Fraction | Uncertainties | string | absolute °C | dB | Syntaxe | Commentaires |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| scipy.constants | scipy.org/... | 167 385 | 7 087 | 181 360 | Oui 50 | Oui 400 in CODATA | Non | - no unit objects | - no unit objects | - no unit objects | - no unit objects | - no unit objects | - no unit objects | Non | Non | constants.c == 299792458.0 | Just tables of numerical constants; unit-aware calculations not supported. scipy.constants.physical_constants specifies units as strings and uncertainties. Could be used to supply other packages with coefficients. |
| sympy.physics.units | sympy.org/... | 55 424 | 6 924 | 18 324 | Oui 200? | Oui | - u.mega*u.meter but not u.megameter | Non | Oui array([1, 2, 3])*u.m | - converts to sympy | - converts to sympy | cm = u.m/100 | |||||
| astropy.units | astropy.org/... | 11 358 | 2 435 | 13 777 | Oui | Oui | Non | Oui | - | Oui | Oui | 15.1 * u.meter / (32.0 * u.second) | |||||
| Pint | github.com/... | 35 746 | 1 128 | 1 579 | Oui | Oui | Oui Mm, GV, etc. | Oui array([1,2,3])*ureg.m or ureg.m*array([1,2,3]) | Non ValueError | Oui | Oui | Oui built-in | Oui | Oui | Non | V = 1*ureg.dm**3 | |
| unyt | readthedocs.io/... | 243 | 29 | Oui 101 | Oui 33 | Oui km | 4*m + 3*cm - 5*ft + 6*yard | ||||||||||
| Quantities | readthedocs.org | 3 917 | 147 | 231 | Oui array([1,2,3]) * pq.J | Non | |||||||||||
| Units | bitbucket.org/... | 1 376 | |||||||||||||||
| numericalunits | python.org/... | 445 | 69 | Overflow issues, random set of units = not deterministic, need to do calculations twice to confirm they are being done correctly | |||||||||||||
| SciMath Units | readthedocs.org/... | 430 | 36 | Oui built-in | |||||||||||||
| Buckingham | github.com/... | 361 | 20 | 0 | Oui 53 | Non | Oui | V = Number(1,dims='decimeter^3') | Single file | ||||||||
| Unum | bitbucket.org/... | 334 | |||||||||||||||
| natu | github.io/... | 315 | Oui | Oui 40 | Oui | Oui m*array([1, 2, 3]) | Oui array([1, 2, 3])*m | Non | Non | Oui | Non | Oui | Oui | V = 1*dm**3 | weird format for dB, Hz != 1/s, "pre-release state" | ||
| misu | github.com/... | 308 | 11 | 0 | |||||||||||||
| Magnitude | juanreyero.com/... | 238 | 16 | 31 | Oui | Oui | Oui | ||||||||||
| udunitspy | github.com/... | 188 | 2 | 0 | Python wrapper for UDUNITS2 | ||||||||||||
| scinumtools.units | github.com/... | 471 | 5 | Oui | Oui | Oui | Oui | Oui | Oui | Oui | Oui | Oui | Oui K, Cel, degF, degR | Oui dB, Np, dBm, dBmW, ... (both B and dB) | quant(3, 'J').to('kg*m2/s2') quant([5.9e-4, 5.2e+5], 'J*s-1').to('W') 33*unit('kg'), const('c') 3*unit.m/unit.s | No registries needed like for Pint. Documentation is available here: github.io/... | |
| DimPy | cam.ac.uk/... | 0 | |||||||||||||||
| Scalar | russp.us/... | 0 | |||||||||||||||
| ScientificPython PhysicalQuantities | cnrs-orleans.fr/... | 0 |
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