;ò †¨(Fc@s?dZdklZlZlZlZdefd„ƒYZedddƒZdZeeddƒed eƒZ e d „ei ƒƒZ e i ƒxxe D]pZed oqšnd eeZyd eeefdUWn(ej odeeefdUnXeZqšW[[[[ [[[eeef\ZZZdS(sDescription of bytes, including the kilo = 1024 twist ... but note kibi, mibi etc. should obsolete these; see quantity.py See also: units.py (s base_unitsQuantitysqSamples_quantifier_dictionarys bQuantitycBs tZd„Zd„ZeZRS(NcCsVy|d}Wntj o d}nX|o|i||ƒSnt||ƒSdS(Nsbiti(sunitssordersKeyErrorsselfs __class__swhatsQuantity(sselfswhatsunitssorder((s&/home/eddy/.sys/py/study/value/byte.pys _quantity s c CsÇ|idƒ} |i| ƒ\}}|djoddf\}}n|t|t| ƒ}|i ƒ}|i |i f\}}| djo£| djo|d}nd|| f}|og|idƒ}|djo|d|}q.|djo|| d|||}q.||}qx|}nG| djo9| d jod ||f}qxd ||| f}n||f\|_ |_ |d jo|Sn|d jo|Sn t|‚dS(Nsbitisisbytes %sbyte^%d^s/s.iÿÿÿÿs %s/%sbytes %s/%sbyte^%d^s _unit_strs _number_str(sselfs _unit_ordersorders_quantade_split_sfactorsmulspowsbytestails _primitives _number_strs _unit_strsnumsunisheresfindsindskeys ValueError( sselfskeysherestailsnumsfactorsindsmulsunisorder((s&/home/eddy/.sys/py/study/value/byte.pys_lazy_get__unit_str_s:           (s__name__s __module__s _quantitys_lazy_get__unit_str_s_lazy_get__number_str_(((s&/home/eddy/.sys/py/study/value/byte.pys bQuantity s  sbits±The definitive unit of binary data. A single binary digit is capable of exactly two states, known as 0 and 1. A sequence of n binary digits thus has pow(2, n) possible states. sbytesbestisØThe standard unit of memory on a computer. Whereas the bit is the *natural* unit of binary data, in practice one normally manipulates data in larger chunks. These may vary from machine to machine, but one mostly deals with multiples of 8 bits (these days) - these suffice for 256 distinct values. An 8-bit byte is also known as an `octet'. Groups of (typically 2, 4, 8 and sometimes higher powers of two) bytes tend to have special significance to the machine, and form the building blocks out of which one builds data structures. On the large scale, one tends to measure amounts of data in units of kilobytes, megabytes, gigabytes, ... in which the factor by which each is a multiple of its predecessor is 1024, rather than the 1000 normally used in kilo, mega, giga ... So I also define Kb, Mb, Gb, along with the full swath of positive-exponent quantifiers applied to byte, as kilobyte etc. above. Indeed, it is mainly in order to do this that I bother defining the byte ... cCs |djS(Ni(sx(sx((s&/home/eddy/.sys/py/study/value/byte.pysOsis%sbytes!%s = Quantity(1024, %s, nom="%s")Ns"%s = Quantity(1024L, %s, nom="%s")(s__doc__squantitys base_unitsQuantitysqSamples_quantifier_dictionarys bQuantitysbits_namesbytesfilterskeyss_rowssorts_keys_noms OverflowErrorskilobytesmegabytesgigabytesKbsMbsGb(s base_unitsqSamplesKbs_keys_noms bQuantitys_names_quantifier_dictionarys_rowsGbsbitsbytesMbsQuantity((s&/home/eddy/.sys/py/study/value/byte.pys?s.(