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Turawar Semalt - Jagoran Farawa Ga Yanar Gizo Tsinkaya A Python

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Gidan yanar gizo ana kiransa fasaha na yau da kullum wanda ake amfani dashi don cirewa bayani daga shafukan yanar gizo daban-daban. Babban abin da ya fi mayar da hankali ga hanya shi ne a canza bayanan da ba a yi ba (tsarin HTML) a cikin bayanan da aka tsara (ƙididdiga ko database). Akwai hanyoyi daban-daban na yin amfani da shafukan yanar gizo, amma hanya ta kowa da sauki shine ta amfani da Python. Wannan shi ne saboda Python yana da wadata a cikin koshin halittu kamar yadda yana da "ɗakunan" BeautifulSoup "wanda ke taimakawa wajen cire bayanai.

A cikin shekaru, an sami karuwa mai girma a cikin buƙatar ƙusar yanar gizo kamar yadda ya tabbatar ya zama mafi yawanci ga mutane. Akwai wasu hanyoyi da dama wanda mutum zai iya cire bayanai daga yanar gizo kamar su APIs a shafukan yanar gizon Twitter, Google da Facebook amma wannan ba hanya ce ta hakika akwai yanar gizo waɗanda basu samar da IPS ba.

Makarantun da ake buƙata don cinyewar yanar gizo

Python yana daya daga cikin hanyoyin da akafi so a cikin shafin yanar gizo kamar yadda yake ba mutumin damar samun ɗumbin ɗakunan karatu. zai iya yin aikin daya kuma yana da mahimmanci kuma mai sauƙin sarrafawa. Abubuwa biyu na Python da aka fi amfani dasu da yawa sun hada da Urllib2 da BeautifulSoup. Urllib2 shi ne tsarin Python wanda za'a iya amfani dashi don samo URLs. A gefe guda, BeautifulSoup wani kayan aiki ne wanda ke amfani da shi don cire bayani kamar tebur da kuma zane daga shafukan intanet.

Sauke shafin yanar gizon ta amfani da ƙaƙƙarfan ƙauna

BeautifulSup yana ɗaya daga cikin manyan kayan aikin yanar gizon da ya fi muhimmanci..Domin samun damar cire shafin yanar gizon ta amfani da Ƙarin Ƙaƙƙwara, akwai matakai daban da ya kamata su bi. Sun hada da:

1. Shigo da ɗakunan karatu masu buƙata - a cikin wannan, ana buƙatar guda ɗaya don shigo da ɗakunan karatu da ake buƙatar don samun bayanin da suke bukata

2. Yi amfani da aikin "bayyana "don duba tsarin da aka samo asali na HTML - wannan muhimmin mataki ne kamar yadda yake taimaka wa mutum ya san alamun da ke samuwa

3. Aiki tare da HTML tag-wasu daga waɗannan alamomi sun haɗa da tagulla

4. Nemi allon dama - gano matakan da ke da hakkin yana da muhimmanci a matsayin wanda zai iya samun cikakken bayanai.

5. Cire bayanai zuwa Madam ɗin Data - wannan shine mataki na ƙarshe kuma a cikin wannan, wanda zai iya samun sakamakon da suke so.

Hakazalika, ana iya amfani da BeautifulSoup don yin wasu nau'ukan daban-daban na yanar gizo dangane da abubuwan da aka zaɓa na mutum.

Akwai wadanda ke tunanin cewa zasu iya yin amfani da maganganu na yau da kullum ba tare da yin amfani da yanar gizo ba kamar BeautifulSoup kuma suna samun sakamako irin wannan. Wannan ba zai yiwu ba saboda akwai bambance-bambance tsakanin BeautifulSoup da maganganu na yau da kullum da kuma sakamako na karshen su ma sun bambanta. Alal misali, Lambobin Ƙaƙwalwar Kasuwanci sun kasance da karfi fiye da waɗanda aka rubuta tare da maganganun yau da kullum.

Sabili da haka, ta yin amfani da shafukan yanar gizo shine hanya mai mahimmanci yadda mutum zai iya samun sakamako mai kyau

1 week ago
Turawar Semalt - Jagoran Farawa Ga Yanar Gizo Tsinkaya A Python
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