2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Nws tsuas yog lub npe sib txawv, thiab nws yog cov qauv hauv python siv _ rau cov hloov pauv hloov pauv. Nws tsuas yog qhia tias lub voj hloov pauv tsis tau siv tiag tiag. Tus neeg txhais lus python khaws cov lus qhia kawg rau qhov txawv txav tshwj xeeb hu ua _. Lub underscore _ kuj tseem siv los tsis quav ntsej txog qhov tshwj xeeb.
Vim li cas peb thiaj siv cov lej hauv qab hauv Python?
Koj tuaj yeem zam kev tsis sib haum xeeb nrog Python Keywords los ntawm kev ntxiv cov ntawv hauv qab kawg ntawm lub npe uas koj xav siv. … Ib Daim Ntawv Tshaj Tawm Underscore yog siv rau npe koj qhov hloov pauv raws li Python Keywords thiab kom tsis txhob muaj kev sib tsoo los ntawm kev ntxiv ib qho underscore thaum kawg ntawm koj lub npe sib txawv.
Cov ntawv hauv qab txhais li cas hauv Python?
Raws li lub ntsiab lus ntawm Underscores hauv Python. Single Leading Underscore(_var): Kev pom zoo lub npe qhia lub npe yog txhais tau rau kev siv sab hauv. Feem ntau tsis raug yuam los ntawm tus neeg txhais lus Python (tshwj tsis yog hauv cov khoom siv tsiaj qus) thiab txhais tau tias yog ib qho lus qhia rau tus programmer nkaus xwb.
Vim li cas peb thiaj siv _ hauv Python?
Single standalone underscore _ yog ib tus cim siv tau rau tus lej Python, yog li nws tuaj yeem siv los ua lub npe sib txawv. Raws li Python doc, tus cim tshwj xeeb _ yog siv rau hauv tus neeg txhais lus sib tham los khaws cov txiaj ntsig ntawm qhov kev ntsuam xyuas zaum kawg. Nws yog khaws cia nyob rau hauv lub builtin module. Nov yog piv txwv.
Yuav siv dab tsi hauv qab?
Tus qhab nias (_) tseem hu ua tus understrike, underbar, lossisunderline, thiab yog ib tug cim uas yog Ameslikas ntawm ib lub tshuab ntaus ntawv ntaus ntawv thiab tau siv yooj yim los kos cov lus los yog cov lej rau qhov tseem ceeb. Niaj hnub no, tus cwj pwm yog siv txhawm rau tsim qhov pom qhov sib txawv hauv ib ntu ntawm cov lus uas tsis pub dawb.
Pom zoo:
Vim li cas cov khoom siv dielectric siv hauv capacitor?
Ib qho khoom siv dielectric yog siv los cais cov paib hluav taws xob ntawm lub capacitor. Cov khoom siv insulating no tseem ceeb txiav txim siab txog cov khoom ntawm cov khoom. Lub dielectric qhov tsis tu ncua ntawm cov khoom txiav txim siab npaum li cas ntawm lub zog uas lub capacitor tuaj yeem khaws cia thaum siv hluav taws xob.
Vim li cas cov alloys siv hauv cov khoom siv hluav taws xob cua sov?
Raws li peb paub alloys muaj siab resistivity thiab siab melting point piv rau cov hlau ntshiab. Yog li cov hlau tsis tuaj yeem yooj yim hlawv lossis oxidize ntawm qhov kub siab dua. Tam sim no raws li peb xav kom kub siab dua hauv cov khoom siv cua sov yog li peb siv cov alloys hauv cov khoom siv cua sov.
Vim li cas cov phiaj xwm tseem ceeb siv rau hauv kev siv nyiaj txiag thiab kev kwv yees?
Lub Rooj Milestones yog ib qho tseem ceeb tshaj plaws hauv koj txoj kev npaj ua lag luam. Nws teeb txoj kev npaj rau hauv cov tswv yim, cov ntsiab lus tseem ceeb, nrog cov peev txheej tiag, hnub kawg, thiab kev tswj xyuas lub luag haujlwm. Nws pab koj ua kom pom tseeb thaum koj tab tom sau koj txoj kev npaj ua lag luam, thiab tom qab ntawd, cov lus Milestones thiab cov phiaj xwm-vs.
Vim li cas gutta-percha siv hauv cov kwj dej hauv paus?
Cov txheej txheem yuav tsum ntxuav tawm cov kab hniav uas muaj kab mob, tshem tawm cov kab mob thiab tom qab ntawd muab cov hniav thiab muab khi. Gutta percha yog cov tshuaj uas yog siv los sau cov hniav kom tsis txhob kis kab mob. Gutta percha yog ib qho thermoplastic filling uas yog cua sov thiab ces nias rau hauv cov kwj hniav.
Vim li cas kev lees paub siv hauv python?
Python assert lo lus tseem ceeb tests if a condition is true. Yog tias qhov xwm txheej tsis raug, qhov kev zov me nyuam yuav nres nrog cov lus xaiv. Cov lus lees paub yog siv los daws qhov chaws thiab daws qhov yuam kev. Koj yuav tsum tsis txhob siv cov lus lees paub hauv qhov chaw tsim khoom.
