Guide to NumPy (for Python) (2006)

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1、GuidetoNumPyTravisE.Oliphant,PhDDec7,2006ThisbookisunderrestricteddistributionusingaMarket-Determined,Tempo-rary,Distribution-Restriction(MDTDR)system(seehttp://www.trelgol.com)untilOctober31,2010atthelatest.Ifyoureceivethisbook,youareaskednottocopyitinan

2、yform(electronicorpaper)untilthetemporarydistribution-restrictionlapses.Ifyouhavemultipleusersataninstitution,youshouldeithershareasinglecopyusingsomeformofdigitallibrarycheck-out,orbuymultiplecopies.Themorecopiespurchased,thesoonerthedocumentationcanbere

3、leasedfromthisincon-venientdistributionrestriction.AfterOctober31,2010thisbookmaybefreelycopiedinanyformatandusedassourcematerialforotherbooksaslongasac-knowledgementoftheoriginalauthorisgiven.Yoursupportofthistemporarydistributionrestrictionplaysanessent

4、ialroleinallowingtheauthorandotherslikehimtoproducemorequalitybooksandsoftware.1ContentsINumPyfromPython121OriginsofNumPy132ObjectEssentials182.1Data-TypeDescriptors..........................202.2Basicindexing(slicing)..........................232.3Memory

5、Layoutofndarray......................262.3.1ContiguousMemoryLayout...................262.3.2Non-contiguousmemorylayout.................282.4UniversalFunctionsforarrays......................302.5Summaryofnewfeatures........................322.6Summaryofdiff

6、erenceswithNumeric.................342.6.1First-stepchanges........................342.6.2Second-stepchanges.......................372.6.3UpdatingcodethatusesNumericusingaltercodeN.....382.6.4Changestothinkabout.....................392.7Summaryofdifference

7、swithNumarray................402.7.1First-stepchanges........................412.7.1.1Importchanges.....................412.7.1.2Attributeandmethodchanges............422.7.2Second-stepchanges.......................432.7.3AdditionalExtensionmodules........

8、..........433TheArrayObject453.1ndarrayAttributes...........................453.1.1MemoryLayoutattributes....................463.1.2DataTypeattributes......................5023.1.3Otherattributes....................