Kwatanta Nau'in Mai duba Python: Fahimtar Kwantena mara komai

Tasirin Duniya na Haƙiƙa: Lokacin da Bambancin Bambanci ya Ciji

Mafi haɗari mafi hatsarin kwantena ba su ne waɗanda aka rubuta tuta ba - su ne waɗanda ke wucewa cikin shiru tare da wani nau'in Kowane nau'in, yana ba da damar bayanan da ba su dace ba su tara ba tare da faɗakarwa ba har sai aikin da ke ƙasa ya yi karo a lokacin aiki tare daNau'in Kuskurewanda ke da wuya a iya gano asalinsa.

Misali mai mahimmanci: ƙungiya a farkon farawa na fintech ya ba da rahoton kashewakwana uku don gyara batun samarwainda jerin maras kyau, wanda aka fara a cikin aikin sarrafa biyan kuɗi, an ƙirƙira shi azaman jeri[Kowane]by mypy. Ya kamata lissafin ya ƙunshi abubuwa na Decimal don adadin kuɗi, amma hanyar lambar tana rataye dabi'umai iyo maimakon. Tausayin Mypy yayi shiru ya kyaleta. Kwaron ya fito ne kawai lokacin da kurakurai a cikin lissafi na ruwa ya haifar da saɓani na $0.01 akan adadin daftari 12,000. Da sun yi amfani da haƙƙin mallaka a cikin yanayi mai tsauri, ko kuma kawai sun ba da lissafin fanko a matsayin jeri[Decimal], da an kama kwaro a lokacin haɓakawa.

Kyawawan Ayyuka don Ƙaddamar da kwantena na Kare

Ko da wane nau'in abin dubawa ne ƙungiyar ku ke amfani da ita, akwai dabaru na musamman don kawar da shubuhar kwantena gaba ɗaya. Manufar ita ce kar a taɓa dogaro da ra'ayi don kwantena mara komai - sanya nau'in a bayyane don haka lambar ku ta kasance mai ɗaukar hoto a duk masu bincike kuma ba ta da sauye-sauyen halayen ƙima tsakanin sigogin.

1. Koyaushe bayyana masu canjin kwantena mara komai. Rubuta sakamako: list[int] = [] maimakon sakamako = [] Ƙananan farashin magana ba shi da komai idan aka kwatanta da lokacin da aka adana. Wannan aikin guda ɗaya yana kawar da kusan kashi 80 cikin ɗari na batutuwan da suka shafi kwantena.
2. Amfani da ayyukan masana'anta don hadaddun kwantena.Maimakon cache = {}, rubuta wani aiki kamar def make_cache() -> dict[str, list[UserRecord]]: komawa {}. Bayanin nau'in dawowa ya sa nau'in da aka yi niyya ya zama mara ma'ana kuma yana rubuta kansa.
3. Afi son ginshiƙan ginshiƙai sama da na zahiri don nau'ikan da ba maras muhimmanci ba. Don defaultdict da Counter, koyaushe suna samar da nau'in siga: counter: Counter[str] = Counter().
4. Ka saita tsayayyen yanayin mai duba nau'in ku don sabuwar lamba. Kunna tsauraran bincike kan sabbin kayayyaki yayin ƙaura a hankali lambar gado. Wannan yana hana tara sabbin kwantena da aka buga a fakaice.
5. Ƙara kwatancen nau'in mai duba zuwa bututun ku na CI. Yin aiki duka biyun mypy da pyright akan lambar lambar ku yana kama da bambance-bambance da wuri. Idan tsari ya wuce abin dubawa ɗaya amma ya kasa wani, sigina ce cewa nau'in bai fito fili ba.