I-Pandas iwumtapo wezincwadi wePython owaziwa kakhulu osetshenziswa emkhakheni wokuhlaziya idatha nokukhohlisa. Namuhla, ukuhlaziya nokusebenza ngenani elikhulu ledatha kubaluleke kakhulu kunangaphambili, futhi amaPanda adlala indima ebalulekile ekuhlinzekeni ngamathuluzi adingekayo ale njongo. Omunye wemisebenzi ebalulekile evame ukwenziwa phakathi nokuhlaziywa kwedatha yikhono lokubuza ulwazi oluthile nokubuyisela ikholomu ngokusekelwe ezimweni ezithile. Kulesi sihloko, sizoxoxa ngendlela yokuthola imiphumela enjalo kusetshenziswa umtapo wezincwadi wePandas onamandla kanye nencazelo enemininingwane yekhodi, imisebenzi, nemitapo yolwazi edingekayo.
AmaPandas
Kuxazululiwe: ama-panda ajoyina okungahlukile
I-Pandas iwumtapo wezincwadi wePython osetshenziswa kabanzi emkhakheni wokukhohlisa nokuhlaziya idatha. Ihlinzeka ngezakhiwo zedatha nemisebenzi edingekayo ukuze kusetshenzwe nedatha ehlelekile kalula. Esinye sezici eziningi ezinikezayo yikhono lokuhlanganisa amathebula ngokhiye abangahlukile, okungaba yimfuneko evamile ezinhlelweni zokusebenza. Kulesi sihloko, sizongena esixazululweni sale nkinga, sihlole incazelo yesinyathelo nesinyathelo sekhodi esetshenziselwa ukujoyina izinto ze-pandas DataFrame ezinokhiye abangahlukile, futhi sixoxe ngemitapo yolwazi nemisebenzi ehilelekile kule nqubo.
Kuxazululiwe: i-pandas Timedelta kuya kuma-postgres
Emhlabeni wokuhlaziya idatha, ukuphatha idatha yochungechunge lwesikhathi kuyisici esibalulekile. Enye yemitapo yolwazi esetshenziswa kakhulu kule njongo i-**pandas** ngolimi lohlelo lwePython. Umsebenzi ojwayelekile lapho usebenza nedatha yochungechunge lwesikhathi ukuguqula umehluko wesikhathi phakathi kwemicimbi ehlukene ube ifomethi evamile. Kulapho i-pandas Timedelta iza khona ilusizo. Kodwa-ke, lapho usebenza ngezinqolobane ezifana ne-PostgreSQL, ukugcina lawa ma-timedeltas kungaba yinto ekhohlisayo. Kulesi sihloko, sizoxoxa ngendlela yokuguqula i-pandas Timedelta ibe ifomethi engagcinwa ku-PostgreSQL, futhi siyithole ngenkathi igcina ukumelwa kwayo okulungile.
Kuxazululiwe: ama-panda agcwalisa emuva ngemva kokwenziwa kwesampula
Emhlabeni wanamuhla, ukukhohlisa nokuhlaziya idatha kubalulekile ukuze uqonde izenzakalo ezihlukahlukene nokwenza izinqumo ezinolwazi. Omunye wemisebenzi evamile ekuhlaziyweni kwedatha ukuhlola kabusha idatha yochungechunge lwesikhathi, okubandakanya ukushintsha imvamisa yedatha, ngokunyusa (ukwandisa imvamisa) noma ngokwehlisa (ukwehlisa imvamisa). Kulesi sihloko, sizoxoxa ngenqubo yokugcwalisa emuva ngenkathi siphakamisa idatha yochungechunge lwesikhathi sisebenzisa umtapo wezincwadi wePython onamandla, iPandas.
Kuxazululiwe: engeza ikholomu entsha kuhlaka lwedatha ye-panda
Kulesi sihloko, sizohlola inqubo yokwengeza ikholomu entsha ku-Pandas DataFrame, umtapo wezincwadi odumile e-Python wokukhohlisa nokuhlaziya idatha. Sizoxoxa ngesixazululo sale nkinga, sidlule encazelweni yesinyathelo nesinyathelo sekhodi, futhi sihlanganise izihloko ezithile ezihlobene nemisebenzi emtatsheni wezincwadi wePandas. I-Pandas iwumtapo wezincwadi osetshenziswa kabanzi onezakhiwo namathuluzi edatha yezinga eliphezulu, elungele ukuhlaziya idatha okusebenza ngempumelelo nemisebenzi yokusingatha.
Kuxazululiwe: ama-panda akhombisa wonke amakholomu
I-Pandas iwumtapo wezincwadi wePython odumile osetshenziselwa ukukhohlisa nokuhlaziya idatha, ehlinzeka ngezakhiwo zedatha, njengeDathaFrames kanye nochungechunge, okwenza kube lula ukuhlaziya, ukuhlanza nokucubungula idatha ngendlela efanele. Kwesinye isikhathi, lapho usebenza ngamasethi edatha amakhulu, kubalulekile ukuthi ukwazi ukubonisa wonke amakholomu ngaphandle kokuncishiswa. Kulesi sihloko, sizofunda indlela yokubonisa wonke amakholomu ku-Pandas DataFrame ngaphandle kwemikhawulo.