Findall yog dab tsi hauv Python?
Findall yog dab tsi hauv Python?

Video: Findall yog dab tsi hauv Python?

Video: Findall yog dab tsi hauv Python?
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findall () Rov qab txhua qhov tsis sib tshooj ntawm cov qauv hauv txoj hlua, raws li cov npe ntawm cov hlua. Cov hlua yog scanned sab laug-rau-txoj cai, thiab cov ntais ntawv raug xa rov qab rau hauv qhov kev txiav txim pom. Piv txwv: #A Python program los ua kom pom kev ua haujlwm ntawm.

Ib yam li ib tug yuav nug, Findall ua dab tsi?

Re . findall () module siv thaum koj xav iterate hla cov kab ntawm cov ntaub ntawv, nws yuav xa rov qab cov npe ntawm txhua qhov kev sib tw hauv ib kauj ruam. Piv txwv li, ntawm no peb muaj cov npe ntawm e-mail chaw nyob, thiab peb xav kom tag nrho cov e-mail chaw nyob yuav tsum tau nqa tawm ntawm daim ntawv, peb siv lub re . findall txoj kev.

Ib sab saum toj no, koj ua li cas rau qhov kev qhia tsis tu ncua hauv Python? Cov kauj ruam ntawm Kev Tshaj Tawm tsis tu ncua

  1. Ntshuam lub regex module nrog import re.
  2. Tsim cov khoom Regex nrog cov re. compile() muaj nuj nqi.
  3. Hla txoj hlua koj xav tshawb rau hauv Regex object's search() method.
  4. Hu rau Match object's group() txoj kev xa rov qab ib txoj hlua ntawm cov ntawv sib tw tiag tiag.

Ntawm no, Finditer yog dab tsi hauv Python?

Python finditer piv txwv tsis tu ncua. nrhiav rov qab ib qho iterator tshaj txhua qhov tsis sib tshooj sib tshooj rau cov qauv qhia tsis tu ncua hauv txoj hlua. (Saib cov ntaub ntawv.) Nws yog ib qho cuab yeej muaj zog rau kev sau ntawv thiab ib qho uas kuv tsis siv ntau txaus.

Koj siv split hauv Python li cas?

Yog koj xav tau cais ib txoj hlua uas phim ib qho kev qhia tsis tu ncua kev sib tw zoo meej, siv tus cais () ntawm re module. Hauv re . cais (), qhia cov qauv qhia tsis tu ncua nyob rau hauv thawj parameter thiab lub hom phiaj cim hlua nyob rau hauv qhov thib ob parameter. Ib qho piv txwv ntawm cais los ntawm tus lej sib law liag yog raws li hauv qab no.

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