Yakasungwa Basa muPython Bytecode

\u003ch2\u003eChained Assignment muPython Bytecode\u003c/h2\u003e \u003cp\u003eChinyorwa ichi chinopa ruzivo rwakakosha uye ruzivo pamusoro wenyaya yacho, zvichibatsira mukugovana ruzivo uye kunzwisisa.\u003c/p\u003e \u003ch3\u003eMakiyi Ekutora\u003c/h3\u003e \u003cp\u003e Vaverengi vanogona kutarisira kuwana:\u003c/p\u003e \u003cul\u003e \u003cli\u003e Kunzwisisa kwakadzama kwenyaya\u003c/li\u003e \u003cli\u003eMashandisirwo anoshanda uye zvinoenderana nenyika chaiyo\u003c/li\u003e \u003cli\u003e Maonero enyanzvi uye ongororo\u003c/li\u003e \u003cli\u003e Ruzivo rwakavandudzwa pane zvirikuitika zvazvino\u003c/li\u003e \u003c/ul\u003e \u003ch3\u003eValue Proposition\u003c/h3\u003e \u003cp\u003e Hunhu hwemukati seizvi hunobatsira kuvaka ruzivo uye kusimudzira kuita sarudzo kune ruzivo munzvimbo dzakasiyana siyana.\u003c/p\u003e

Mibvunzo Inowanzo bvunzwa

Chii chinonzi cheni chebasa muPython?

Chained assignment inokubvumira kuti upe kukosha kwakafanana kune zvakasiyana-siyana muchirevo chimwe chete, se a = b = c = 10. Payero yebytecode, Python inoongorora kutaura kwekurudyi kamwe chete, yobva yadzokorodza mhedzisiro iri pastack ichishandisa DUP_TOP uye inoichengeta muchinangwa chimwe nechimwe kubva kuruboshwe kuenda kurudyi. Izvi zvinoita kuti basa rakasungwa rive rakapfupika uye rishande zvichienzaniswa nekunyora zvirevo zvakasiyana.

Python bytecode inobata sei mabasa akasungwa zvakasiyana kubva kumabasa akawanda?

Necheni yekupihwa, chirevo chinoongororwa kamwe chete uye kukosha kwacho kunodzokororwa pastack kune yega yega inosiyana. Kusiyana, kunyora mabasa akasiyana se a = 10; b = 10 inoongorora chaiyo yakazvimiririra kune imwe neimwe mutsara. Unogona kuongorora maitiro aya uchishandisa Python's dis module, iyo inoparadzanisa mabasa mubytecode mirairo yavo, ichiburitsa DUP_TOP uye STORE_NAME maitiro akabatanidzwa.

Pane mapitfall ane cheni yekupihwa kwezvinhu zvinochinjika?

Hongu — chikanganiso chinowanzoitika kunyora a = b = [], iyo inosunga zvese zviri zviviri kune zvakafanana chinhu cherondedzero pane kugadzira zvinyorwa zviviri zvakazvimirira. Kuchinja imwe kuchakanganisa imwe. Izvi zvinoitika nekuti iyo bytecode inodzokorora referensi, kwete chinhu chacho. Kunzwisisa iyi bytecode-level maitiro kunobatsira vanogadzira kudzivirira zvisingaoneki bugs. Mewayz inovhara mutable vs isingachinji semantics mukati meiyo 207 Python modules, inowanikwa ne $19/mo.

Ndokupi kwandingadzidza zvakawanda nezvePython bytecode nemakanika emukati?

Iyo official dis module zvinyorwa inzvimbo yakanaka yekutanga yekuongorora bytecode mirairo. Kune yakarongeka, maoko-panzira yekudzidza iyo inovhara Python vemukati pamwe chete nehunyanzvi hwekuita hurongwa, Mewayz inopa mazana maviri nenomwe akagadzirwa nehunyanzvi module pamadhora gumi nemapfumbamwe / mo. Aya mamodule anofambira mberi kubva padzidziso dzehwaro senge kugovanisa kuenda kumisoro yepamusoro sekuongorora bytecode, manejimendi endangariro, uye maitiro emuturikiri.