ó jˆú\c@@sÚdZddlmZddlmZddlZddlZddlZddlZddlZddl m Z ddl Z ddl m Z ddl Z idd 6d d 6ejd 6d d6Ze jZd„Zd„Zd„Zed„Zd„Zdd„Zd„Zdd„Zd„ZiZddlZdd„Zd„Z dd„Z!ej"d„Z#ej"d„Z$ej"d„Z%d e&fd!„ƒYZ'd"e(fd#„ƒYZ)d$„Z*d%„Z+e,d&krÖe+ƒndS('sUtility functions.i(tprint_function(tabsolute_importN(ttimei(tarray_of_flavortbigt>tlittlet      c@s1ˆj‰‡‡fd†}t|ddˆjƒS(s"Create a *lazy attribute* from the result of `fget`. This function is intended to be used as a *method decorator*. It returns a *property* which caches the result of calling the `fget` instance method. The docstring of `fget` is used for the property itself. For instance: >>> class MyClass(object): ... @lazyattr ... def attribute(self): ... 'Attribute description.' ... print('creating value') ... return 10 ... >>> type(MyClass.attribute) >>> MyClass.attribute.__doc__ 'Attribute description.' >>> obj = MyClass() >>> obj.__dict__ {} >>> obj.attribute creating value 10 >>> obj.__dict__ {'attribute': 10} >>> obj.attribute 10 >>> del obj.attribute Traceback (most recent call last): ... AttributeError: can't delete attribute .. warning:: Please note that this decorator *changes the type of the decorated object* from an instance method into a property. c@s5|j}ˆ|kr|ˆSˆ|ƒ|ˆ<}|S(N(t__dict__(tselftmydicttvalue(tfgettname(s+lib/python2.7/site-packages/tables/utils.pytnewfgetïs   N(t__name__tpropertytNonet__doc__(RTRV((RTRUs+lib/python2.7/site-packages/tables/utils.pytlazyattrÄs) c C@s×|dkrtjƒ}ndtjƒ}tj|dtdtjƒj }x |D]}|j |ƒ}|j dƒrt |j ƒdƒ}qS|j dƒr¸t |j ƒdƒ}qS|j dƒràt |j ƒdƒ}qS|j dƒrt |j ƒdƒ} qS|j d ƒr0t |j ƒdƒ} qS|j d ƒrSt |j ƒdƒ} qSqSW|jƒtd |ƒtd ||fƒtd || fƒtd| | fƒtƒ} tdt| |dƒƒ| S(s2Show the used memory (only works for Linux 2.6.x).scat /proc/%s/statustshelltstdoutsVmSize:isVmRSS:sVmData:sVmStk:sVmExe:sVmLib:s Memory usage: ******* %s *******sVmSize: %7s kB VmRSS: %7s kBsVmData: %7s kB VmStk: %7s kBsVmExe: %7s kB VmLib: %7s kBsWallClock time:iN(RYR:tgetdefaultencodingRAtgetpidt subprocesstPopenRtPIPER]tdecodet startswithR)tsplittclosetprintRtround( texplainttreftencodingtcmdtsouttlinetvmsizetvmrsstvmdatatvmstktvmexetvmlibttnow((s+lib/python2.7/site-packages/tables/utils.pyt show_statsùs4 !   cC@s¤td| ƒ}tj|ƒ}|dkrCttj|ƒƒ}nttj|ƒƒ}tjtjtd| ƒƒƒ}td|ƒ}tj||ƒ|}|S(s÷quantize data to improve compression. Data is quantized using around(scale*data)/scale, where scale is 2**bits, and bits is determined from the least_significant_digit. For example, if least_significant_digit=1, bits will be 4. g$@ig@(tpowR"tlog10R)tfloortceiltlog2taround(tdatatleast_significant_digitt precisiontexptbitstscaletdatout((s+lib/python2.7/site-packages/tables/utils.pytquantizes  "cC@sR|dkrN|jj}|tkr1gt| sP              8 5 #     6