In This Article, You Will Know About Python Constants SciPy.
Python Constant SciPy – Before moving ahead, let’s know about Python SciPy Intro.
Table of Contents
Constant SciPy
Since SciPy tends to be more driven by implementations of science. It provides a variety of included scientific constants.
These constants are useful in the context of Data Science.
PI is one of the examples of scientific constant.
Example – Print the constant value of PI.
from scipy import constants
print(constants.pi)
Constant Units
Use dir() function to see the list of all units under constant module.
Example – Printing list of all units under constant.
from scipy import constants
print(dir(constants))
Unit Categories
The units are placed under these categories:
Metric | Binary |
Mass | Angle |
Time | Length |
Pressure | Volume |
Speed | Temperature |
Energy | Power |
Force | |
Metric (SI) Prefixes
Returns the specified unit in meter (e.g. deka returns 10.0)
Example –
from scipy import constants
print(constants.yotta)
print(constants.zetta)
print(constants.exa)
print(constants.peta)
print(constants.tera)
print(constants.giga)
print(constants.mega)
print(constants.kilo)
print(constants.hecto)
print(constants.deka)
print(constants.deci)
print(constants.centi)
print(constants.milli)
print(constants.micro)
print(constants.nano)
print(constants.pico)
print(constants.femto)
print(constants.atto)
print(constants.zepto)
Binary Prefixes
Returns the specified unit in bytes (e.g. gibi returns 1073741824)
Example –
from scipy import constants
print(constants.kibi)
print(constants.mebi)
print(constants.gibi)
print(constants.tebi)
print(constants.pebi)
print(constants.exbi)
print(constants.zebi)
print(constants.yobi)
Mass
Return the specified unit in kg (e.g. carat returns 0.001)
Example –
from scipy import constants
print(constants.gram)
print(constants.metric_ton)
print(constants.grain)
print(constants.lb)
print(constants.pound)
print(constants.oz)
print(constants.ounce)
print(constants.stone)
print(constants.long_ton)
print(constants.short_ton)
print(constants.troy_ounce)
print(constants.troy_pound)
print(constants.carat)
print(constants.atomic_mass)
print(constants.m_u)
print(constants.u)
Angle
Returns the specified unit in radians (e.g. arcsec returns 4.84813681109536e-06)
Example –
from scipy import constants
print(constants.degree)
print(constants.arcmin)
print(constants.arcminute)
print(constants.arcsec)
print(constants.arcsecond)
Time
Returns the specified unit in seconds (e.g. minute returns 60.0)
Example –
from scipy import constants
print(constants.minute)
print(constants.hour)
print(constants.day)
print(constants.week)
print(constants.year)
print(constants.Julian_year)
Length
Return the specified unit in meters (e.g. fermi returns 1e-15)
Example –
from scipy import constants
print(constants.inch)
print(constants.foot)
print(constants.yard)
print(constants.mile)
print(constants.mil)
print(constants.pt)
print(constants.point)
print(constants.survey_foot)
print(constants.survey_mile)
print(constants.nautical_mile)
print(constants.fermi)
print(constants.angstrom)
print(constants.micron)
print(constants.au)
print(constants.astronomical_unit)
print(constants.light_year)
print(constants.parsec)
Pressure
Return the specified unit in pascals (e.g. bar returns 100000.0)
Example –
from scipy import constants
print(constants.atm)
print(constants.atmosphere)
print(constants.bar)
print(constants.torr)
print(constants.mmHg)
print(constants.psi)
Area
Returns the specified unit in square meters(e.g. acre returns 4046.8564223999992)
Example –
from scipy import constants
print(constants.hectare)
print(constants.acre)
Volume
Returns the specified unit in cubic meters (e.g. gallon_imp returns 0.00454609)
Example –
from scipy import constants
print(constants.liter)
print(constants.litre)
print(constants.gallon)
print(constants.gallon_US)
print(constants.gallon_imp)
print(constants.fluid_ounce)
print(constants.fluid_ounce_US)
print(constants.fluid_ounce_imp)
print(constants.barrel)
print(constants.bbl)
Speed
Returns the specified unit in meters per second (e.g. kmh returns 0.2777777777777778)
Example –
from scipy import constants
print(constants.kmh)
print(constants.mph)
print(constants.mach)
print(constants.speed_of_sound)
print(constants.knot)
Temperature
Returns the specified unit in Kelvin (e.g. degree_Fahrenheit returns 0.5555555555555556)
Example –
from scipy import constants
print(constants.zero_Celsius)
print(constants.degree_Fahrenheit)
Energy
Returns the specified unit in joules (e.g. erg returns 1e-07)
Example –
from scipy import constants
print(constants.eV)
print(constants.electron_volt)
print(constants.calorie)
print(constants.calorie_th)
print(constants.calorie_IT)
print(constants.erg)
print(constants.Btu)
print(constants.Btu_IT)
print(constants.Btu_th)
print(constants.ton_TNT)
Power
Returns the specified unit in watts (e.g. hp returns 745.6998715822701)
Example –
from scipy import constants
print(constants.hp)
print(constants.horsepower)
Force
Return the specified unit in newton (e.g. dyne returns 1e-05)
Example –
from scipy import constants
print(constants.dyn)
print(constants.dyne)
print(constants.lbf)
print(constants.pound_force)
print(constants.kgf)
print(constants.kilogram_force)
If you find anything incorrect in the above-discussed topic and have any further questions, please comment below.
