Module firkin :: Class SIFamily

Class SIFamily

object --+    
         |    
    Family --+
             |
            SIFamily

Family that uses SI prefixes:

y (yokto) = 10e-24
z (zepto) = 10e-21
a (atto) = 10e-18
f (femto) = 10e-15
p (pico) = 10e-12
n (nano) = 10e-9
µ (micro) = 10e-6
m (milli) = 10e-3
k (kilo) = 10e3
M (mega) = 10e6
G (giga) = 10e9
T (tera) = 10e12
P (peta) = 10e15
E (exa) = 10e18
Z (zeta) = 10e21
Y (yotta) = 10e24

If extended is True the folowing prefixes are added:

c (centi) = 10e-2
d (dezi) = 10e-1
da (deka) = 10e1
h (hekto) = 10e2

For every prefix a unit is created.

>>> fam=SIFamily('m')
>>> fam.convert(1e8, 'mm', 'km')
(Decimal("100.000"), 'km')
>>> fam.autoconvert(3.65e-4, 'km')
(Decimal("365.0000"), 'mm')

Instance Methods

[hide private]

__init__(self, base, name=None, extended=False)
Constructor

source code

Inherited from Family: __contains__, __getitem__, __setitem__, add, autoconvert, convert

Inherited from object: __delattr__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __str__

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, base, name=None, extended=False)
(Constructor)

source code

Constructor

Overrides: Family.__init__: (inherited documentation)

Class SIFamily

__init__(self, base, name=None, extended=False) (Constructor)

init(self, base, name=None, extended=False)
(Constructor)