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Uchwepheshe we-Semalt Wakha I-Website Data Extraction Tools

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Ukuqedwa kweWebhu kuhilela isenzo sokuqoqa idatha yewebhusayithi usebenzisa i-web crawler . Abantu basebenzisa amathuluzi okukhipha idatha yedatha ukuze bathole ulwazi olubalulekile kusuka kuwebhusayithi engatholakala ukuthunyelwa kwelinye idrayivu yesitoreji sendawo noma i-database eseduzane. Isofthiwe ye-web scraper iyithuluzi elingasetshenziselwa ukukhasa nokuvuna ulwazi lwewebhusayithi njengezigaba zomkhiqizo, iwebhusayithi yonke (noma izingxenye), okuqukethwe kanye nezithombe. Ungakwazi ukuthola noma yikuphi okuqukethwe kwewebhusayithi kusuka kwesinye isayithi ngaphandle kwe-API esemthethweni yokusebenzisana nedatha yakho.

Kulesi sihloko se-SEO, kunemigomo eyisisekelo lapho amathuluzi okukhishwa kwedatha yewebhusayithi asebenza khona. Ungakwazi ukufunda indlela isicabucabu esenza ngayo inqubo yokukhwabanisa ukulondoloza idatha yewebhu ngendlela ehlelekile yokuqoqwa kwedatha yewebhusayithi. Sizocubungula ithuluzi lekususwa kwedatha lewebhu leBrickSet. Lesi sizinda iwebhusayithi ye-community equkethe ulwazi oluningi mayelana nezinethi ze-LEGO. Kumele ukwazi ukwenza ithuluzi le-Python lokukhipha ithuluzi elikwazi ukuhamba kuwebhusayithi ye-BrickSet bese ulondoloza ulwazi njengoba idatha ibeka esibukweni sakho. Le-scraper yewebhu iyanda futhi ingafaka izinguquko zesikhathi esizayo ekusebenzeni kwayo.

Okudingekayo

Ukuze umuntu enze i-Python web scrapper, udinga imvelo yendawo yokuthuthukiswa ye-Python 3. Le imvelo yokugijima i-Python API noma i-Software Development Kit ngokwenza ezinye izingxenye ezibalulekile yesofthiwe yakho ye-crawler yewebhu. Kukhona izinyathelo ezimbalwa umuntu angazilandela lapho enza leli thuluzi:

Ukudala isisindo esiyisisekelo

Kulesi sigaba, udinga ukwazi ukuthola nokulanda amakhasi wewebhu wewebhusayithi ngokuhlelekile. Kusuka lapha, ungakwazi ukuthatha amakhasi wewebhu bese ukhipha ulwazi olufunayo kubo. Izilimi ezahlukene zokuhlela zingakwazi ukufeza le mpumelelo. Umqambi wakho kufanele akwazi ukukhomba ikhasi elingaphezu kweyodwa ngesikhathi esisodwa, kanye nokukwazi ukulondoloza idatha ngezindlela ezihlukahlukene.

Udinga ukuthatha isigaba se-Scrappy se-spider yakho. Ngokwesibonelo, igama lethu lesicabangulu li-brickset_spider. Okukhiphayo kufanele kubonakale kufana nalokhu:

iskripthi sokufaka ipayipi

Le khodi yocingo i-Python Pip engenzeka ngokufana nocingo:

mkdir-brickset-scraper

Lolu chungechunge ludala isiqondisi esisha. Ungakwazi ukuhamba kuwo futhi usebenzise eminye imiyalo efana nokufaka okuthinta ngale ndlela:

thinta scraper.py

December 7, 2017
Uchwepheshe we-Semalt Wakha I-Website Data Extraction Tools
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