Python suav li cas hash?
Python suav li cas hash?

Video: Python suav li cas hash?

Video: Python suav li cas hash?
Video: Hash tables in 4 minutes 2024, Kaum ib hlis
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Hashing Cov hlua nrog Python . A hash muaj nuj nqi yog ib txoj haujlwm uas siv cov tswv yim ntawm qhov sib txawv ntawm qhov ntev ntawm cov bytes thiab hloov nws mus rau qhov ntev tas li. Nws yog ib txoj kev ua haujlwm. Qhov no txhais tau tias yog f hashing muaj nuj nqi, xam f(x) zoo nkauj sai thiab yooj yim, tab sis sim kom tau x dua yuav siv sij hawm ntau xyoo.

Hauv qhov no, txoj kev hash yog dab tsi hauv Python?

Hash txoj kev hauv Python yog ib tug module uas yog siv los rov qab cov hash tus nqi ntawm ib yam khoom. Hauv programming, lub txoj kev hash yog siv los xa rov qab qhov tseem ceeb uas siv los sib piv cov phau ntawv txhais lus siv phau ntawv txhais lus nrhiav feature.

Tsis tas li ntawd, ua li cas koj hash cov ntaub ntawv hauv Python? Rau hash ib file , nyeem nws hauv ntsis-los-ntsis thiab hloov kho tam sim no hashing functions piv txwv. Thaum tag nrho cov bytes tau muab rau cov hashing ua haujlwm hauv kev txiav txim, peb tuaj yeem tau txais qhov hex digest. Cov snippet no yuav luam tawm hash tus nqi ntawm cov ntaub ntawv teev nyob rau hauv ntaub ntawv tsim siv SHA256 algorithm.

Raws li txoj cai, Python puas tau teeb tsa lub rooj hash?

Hash rooj yog siv los ua daim ntawv qhia thiab teeb cov ntaub ntawv tsim nyob rau hauv ntau hom lus programming, xws li C ++, Java, thiab Python . Python siv rooj rooj rau phau ntawv txhais lus thiab teeb . A rooj rooj yog ib qho kev sau tsis raug ntawm cov khoom tseem ceeb-tus nqi, qhov twg txhua tus yuam sij yog qhov tshwj xeeb.

Koj puas tuaj yeem hash ib tuple hauv Python?

Python nws tus kheej tsis muaj lub tswv yim txog mutability ntawm ib yam khoom. Hauv koj qhov piv txwv thawj, tuple tshwm sim rau hash nws tus kheej ntawm nws cov ntsiab lus, thaum lub npe tsis muaj hash nyob rau hauv tag nrho - lub. Yog vim li cas koj ua tau hloov tus nqi hauv koj cov khoom yam tsis hloov nws hash.

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