Iṣẹ iyansilẹ ni Python Bytecode
\u003ch2\u003e Iṣẹ iyansilẹ ni Python Bytecode\u003c/h2\u003e \u003cp\u003e Nkan yii n pese awọn oye ti o niyelori ati alaye lori koko-ọrọ rẹ, ti o ṣe alabapin si pinpin imọ ati oye.\u003c/p\u003e \u003ch3\u003e Awọn ọna gbigba bọtini\u003c/h3\u003e \u003cp\u003eR...
Mewayz Team
Editorial Team
Awọn ibeere Nigbagbogbo
Kini iṣẹ iyansilẹ dè ni Python?
Iṣẹ iyansilẹ ti o ni ẹwọn gba ọ laaye lati fi iye kanna si awọn oniyipada pupọ ninu ọrọ kan, bii a = b = c = 10. Ni ipele bytecode, Python ṣe iṣiro ikosile-ọtun ni ẹẹkan, lẹhinna ṣe ẹda abajade lori akopọ nipa lilo DUP_TOPati fipamọ sinu ibi-afẹde kọọkan lati osi si otun. Eyi jẹ ki iṣẹ iyansilẹ di ṣoki ati daradara ni akawe si kikọ awọn alaye iṣẹ iyansilẹ lọtọ.
Bawo ni Python bytecode ṣe mu awọn iṣẹ iyansilẹ ẹwọn ṣe yatọ si awọn iṣẹ iyansilẹ lọpọlọpọ?
Pẹlu iṣẹ iyansilẹ ti a fi ẹwọn, a ṣe ayẹwo ikosile lẹẹkanṣoṣo ati pe iye abajade jẹ pidánpidán lori akopọ fun oniyipada ibi-afẹde kọọkan. Ni idakeji, kikọ awọn iṣẹ iyansilẹ lọtọ bi a = 10; b = 10n ṣe iṣiro gangan ni ominira fun laini kọọkan. O le ṣayẹwo ihuwasi yii nipa lilo module dis Python, eyiti o pin awọn iṣẹ pọ si awọn ilana bytecode wọn, ṣiṣafihan awọn iṣẹ DUP_TOP ati STORE_NAME awọn iṣẹ ṣiṣe.
Ṣe awọn ọfin wa pẹlu iṣẹ iyansilẹ ẹwọn fun awọn ohun ti a le yipada bi?
Bẹẹni — asise ti o wọpọ ni kikọ a = b = [], eyiti o so awọn oniyipada mejeeji pọ mọ kanna ohun atokọ dipo ṣiṣẹda awọn atokọ ominira meji. Yiyipada ọkan yoo ni ipa lori ekeji. Eyi ṣẹlẹ nitori pe koodu baiti ṣe pidánpidán itọkasi, kii ṣe ohun naa funrararẹ. Loye ihuwasi ipele-bytecode yii ṣe iranlọwọ fun awọn idagbasoke lati yago fun awọn idun arekereke. Mewayz ni wiwa ti o le yipada vs awọn itumọ aileyipada kọja awọn modulu Python 207 rẹ, wa fun $19/mo.
Nibo ni MO ti le kọ diẹ sii nipa Python bytecode ati awọn mekaniki inu?
Oṣiṣẹ dis iwe-ipamọ module jẹ aaye ibẹrẹ nla fun ṣiṣewadii awọn ilana bytecode. Fun ti eleto, ọna ikẹkọ ọwọ-ọwọ ti o ni wiwa Python internals lẹgbẹẹ awọn ọgbọn siseto iṣe, Mewayz nfunni ni awọn modulu ti a ṣe ni oye 207 ni $19/mo. Awọn modulu wọnyi ni ilọsiwaju lati awọn imọran ipilẹ bi iṣẹ iyansilẹ nipasẹ si awọn koko-ọrọ ilọsiwaju gẹgẹbi itupalẹ bytecode, iṣakoso iranti, ati ihuwasi onitumọ.
Gbogbo Awọn Irinṣẹ Iṣowo Rẹ ni Ibi Kan
Dẹkun jijọ awọn ohun elo lọpọlọpọ. Mewayz ṣajọpọ awọn irinṣẹ 207 fun $ 19 fun oṣu kan - lati atokọ si HR, fowo si awọn atupale. Ko si kaadi kirẹditi ti o nilo lati bẹrẹ.
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