Chen Asaynmɛnt insay Paytɔn Baytkɔd

\u003ch2\u003eChained Asaynmɛnt insay Paytɔn Baytkɔd\u003c/h2\u003e \u003cp\u003eDis atikul de gi valyu insayt ɛn infɔmeshɔn bɔt in tɔpik, we de ɛp fɔ sheb di no ɛn ɔndastand.\u003c/p\u003e \u003ch3\u003eKi Tek-away\u003c/h3\u003e \u003cp\u003eDi wan dɛn we de rid kin ɛkspɛkt fɔ gɛt:\u003c/p\u003e \u003kul\u003e \u003cli\u003eDip ɔndastandin fɔ di tɔpik\u003c/li\u003e \u003cli\u003ePraktikal aplikeshɔn ɛn rial-wɔl rilevans\u003c/li\u003e \u003cli\u003eEkspɛkt pɔsitiv ɛn analisis\u003c/li\u003e \u003cli\u003eUpdet infɔmeshɔn bɔt di divɛlɔpmɛnt dɛn we de naw\u003c/li\u003e \u003c/ul\u003e \u003ch3\u003eValyu Prɔpɔshɔn\u003c/h3\u003e \u003cp\u003eKwaliti kɔntinyu lɛk dis de ɛp fɔ bil no ɛn protɛkt di disizhɔn-mɛkin we dɛn no bɔt na difrɛn domɛyn dɛn.\u003c/p\u003e

Kwɛshɔn dɛn we dɛn kin aks bɔku tɛm

Wetin na chen asaynmɛnt na Paytɔn?

Chained asaynmɛnt de alaw yu fɔ asaynd di sem valyu to bɔku vɛriɔbul dɛn na wan stetmɛnt, lɛk a = b = c = 10. Na di baytkɔd lɛvɛl, Paytɔn de evalyu di rayt-an ɛksprɛshɔn wan tɛm, dɔn i de dupliket di rizɔlt na di stak yuz DUP_TOP ɛn kip am insay ɛni target frɔm lɛft to rayt. Dis de mek chen asaynmɛnt ɔl tu kɔrɛkt ɛn efishɔnal kɔmpia to raytin sɛpret asaynmɛnt stetmɛnt.

Aw Paytɔn baytkɔd de handle chen asaynmɛnt dɛn difrɛn frɔm bɔku asaynmɛnt dɛn?

Wit chen asaynmɛnt, di ɛksprɛshɔn de ɛvaluet wan tɛm nɔmɔ ɛn di valyu we kɔmɔt de duplikɛt pan di stak fɔ ɛni target vɛriɔbul. Difrɛn frɔm dat, fɔ rayt difrɛn asaynmɛnt dɛn lɛk a = 10; b = 10 de evaluate di literal indipɛndɛnt wan fɔ ɛni layn. Yu kin inspɛkt dis bihayvya yuz Python in dis modul, we de disassemble fɛnshɔn dɛn insay dɛn baytkɔd instrɔkshɔn, we de sho di DUP_TOP ɛn STORE_NAME ɔpreshɔn dɛn we involv.

Trap de wit chen asaynmɛnt fɔ mutabl ɔbjɛkt?

Yes — wan kɔmɔn mistek na fɔ rayt a = b = [], we de tay ɔl tu di vɛriɔbul dɛn to di semwe list ɔbjɛkt pas fɔ mek tu indipɛndɛnt list dɛn. If yu chenj wan, dat go afɛkt di ɔda wan. Dis kin apin bikɔs di baytkɔd de dupliket di rɛfrɛns, nɔto di ɔbjɛkt insɛf. We yu ɔndastand dis baytkɔd-lɛvel bihayvya, dat de ɛp divɛlɔpa dɛn fɔ avɔyd subtil bɔg dɛn. Mewayz kɔba mutabl vs immutabl sɛmantiks akɔs in 207 Paytɔn mɔdyul dɛn, we de fɔ $19/mo.

Usay a kin lan mɔ bɔt Paytɔn baytkɔd ɛn intanɛnt mɛkaniks?

Di ɔfishal dis mɔdyul dɔkyumentri na fayn statin pɔynt fɔ ɛksplɔrɔ baytkɔd instrɔkshɔn dɛn. Fɔ wan strɔkchɔ, han-on lanin pat we de kɔba Paytɔn intanɛnt dɛn alongsay prɛktikal programin skil dɛn, Mewayz de gi 207 ɛkspɛkt kraft modul dɛn na $19/mo. Dɛn mɔdyul ya de go bifo frɔm fawndeshɔn kɔnsɛpt dɛn lɛk vɛriɔbul asaynmɛnt tru to advans tɔpik dɛn lɛk baytkɔd analisis, mɛmori manejmɛnt, ɛn intaprita bihayvya.

, we yu kin yuz