Video: NumPy array yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
A numpy array yog ib daim phiaj ntawm qhov tseem ceeb, tag nrho cov tib yam, thiab yog indexed los ntawm ib tug tuple ntawm nonnegative integers. Tus naj npawb ntawm qhov ntev yog qib ntawm cov array ; lub shape ib array yog ib tug tuple ntawm integers muab qhov loj ntawm tus array raws txhua qhov ntev. Lub tsev qiv ntawv Python core muab Cov Npe.
Ib yam li ntawd, koj ua li cas tshaj tawm NumPy array?
Koj tuaj yeem tsim Python daim ntawv teev npe thiab dhau nws lub npe sib txawv los tsim ib qho Numpy array . Koj tuaj yeem paub meej tias ob qho tib si sib txawv, array thiab cov npe, yog hom Python daim ntawv teev npe thiab Numpy array raws. Tsim kom muaj ob-dimensional array , hla ib ntu ntawm cov npe mus rau array muaj nuj nqi.
Ib yam li ntawd, NumPy siv rau dab tsi? NumPy yog ib pob hauv Python siv rau Kev suav lej. NumPy pob yog siv rau ua haujlwm sib txawv. The ndarray ( NumPy Array) yog ib qho array ntau yam siv rau khaws cov nqi ntawm tib datatype. Cov arrays no yog indexed ib yam li Sequences, pib nrog xoom.
Ntawm no, qhov twg nrawm dua NumPy array lossis npe?
Vim lub Numpy array yog densely packed nyob rau hauv lub cim xeeb vim nws homogeneous hom, nws kuj frees lub cim xeeb sai dua . Yog li tag nrho ib txoj haujlwm ua tiav hauv Numpy yog nyob ib ncig ntawm 5 mus rau 100 zaus sai dua tshaj tus qauv python lis , uas yog ib tug tseem ceeb leap nyob rau hauv cov nqe lus ntawm ceev.
Vim li cas NumPy array ceev?
Kev ua haujlwm hauv Numpy muaj ntau sai dua vim hais tias lawv siv qhov zoo ntawm kev sib luag (uas yog cov ntaub ntawv ntawm Ib qho Kev Qhia Ntau Cov Ntaub Ntawv (SIMD)), thaum ib txwm siv rau lub voj tsis tuaj yeem siv nws.
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