{"id":55199,"date":"2020-01-15T00:00:00","date_gmt":"2020-01-14T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/tsenoj-perevoda-mercurial-na-python-3-mozhet-stat-shlejf-nepredvidennyh-oshibok"},"modified":"2020-02-18T14:03:17","modified_gmt":"2020-02-18T11:03:17","slug":"tsenoj-perevoda-mercurial-na-python-3-mozhet-stat-shlejf-nepredvidennyh-oshibok","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/tsenoj-perevoda-mercurial-na-python-3-mozhet-stat-shlejf-nepredvidennyh-oshibok","title":{"rendered":"A Mercurial Python 3-ra val\u00f3 \u00e1t\u00e1ll\u00e1sa v\u00e1ratlan hib\u00e1k hossz\u00fa sor\u00e1t okozhatja","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A verzi\u00f3kezel\u0151 rendszer karbantart\u00f3ja Mercurial<\/a><\/noindex> \u00f6sszegzett eredm\u00e9ny<\/a><\/noindex> a projekt Python 2-r\u0151l Python 3-ra val\u00f3 portol\u00e1s\u00e1nak munk\u00e1j\u00e1r\u00f3l. Hab\u00e1r az els\u0151 portol\u00e1si pr\u00f3b\u00e1lkoz\u00e1sokra m\u00e1r 2008-ban sor ker\u00fclt, \u00e9s a Python 3-ra val\u00f3 alkalmazkod\u00e1s s\u00fcrg\u0151s \u00fctemben 2015-ben kezd\u0151d\u00f6tt, a Python 3 teljes k\u00f6r\u0171 haszn\u00e1lat\u00e1nak lehet\u0151s\u00e9ge csak a Mercurial 5.2 leg\u00fajabb \u00e1gazat\u00e1ban val\u00f3sult meg. <\/p>\n

A Python 3 stabilit\u00e1s\u00e1r\u00f3l sz\u00f3l\u00f3 el\u0151rejelz\u00e9sek kedvez\u0151tlenek. K\u00fcl\u00f6n\u00f6sen arra sz\u00e1m\u00edtanak, hogy az elk\u00f6vetkez\u0151 \u00e9vekben v\u00e9letlenszer\u0171 hib\u00e1k bukkannak fel a k\u00f3dban, mivel a tesztek nem fedik le a k\u00f3dalap 100%-\u00e1t, \u00e9s sok probl\u00e9ma rejtve marad a statikus elemz\u00e9s sor\u00e1n, csak fut\u00e1s k\u00f6zben mutatkozik meg. Ezenk\u00edv\u00fcl sok k\u00fcls\u0151 kieg\u00e9sz\u00edt\u0151 \u00e9s b\u0151v\u00edtm\u00e9ny nem lett \u00e1t\u00edrva Python 3-ra.
\nMivel a portol\u00e1s sor\u00e1n azt a d\u00f6nt\u00e9st hozt\u00e1k, hogy fokozatosan alak\u00edtj\u00e1k a k\u00f3dot Python 3-ra, mik\u00f6zben meg\u0151rzik a Python 2 t\u00e1mogat\u00e1s\u00e1t, a k\u00f3d sz\u00e1mos hackkel b\u0151v\u00fclt, hogy \u00f6sszeegyeztethet\u0151 legyen a Python 2-vel \u00e9s 3-mal, amelyeket a Python 2 t\u00e1mogat\u00e1s\u00e1nak megsz\u0171n\u00e9se ut\u00e1n el kell t\u00e1vol\u00edtani. <\/p>\n

A Python 3-al kapcsolatos helyzetet komment\u00e1lva a Mercurial karbantart\u00f3ja \u00fagy v\u00e9li, hogy a Python 3-ra val\u00f3 el\u0151rel\u00e9p\u00e9s, amely megszak\u00edtja a kompatibilit\u00e1st \u00e9s \u00faj, helyesebb nyelvk\u00e9nt k\u00edv\u00e1nja azt bevezetni, a fejleszt\u0151k sz\u00e1m\u00e1ra hi\u00e1nyz\u00f3 kiemelked\u0151 fejleszt\u00e9sek n\u00e9lk\u00fcl nagy hiba volt, amely jelent\u0151s k\u00e1rt okozott a k\u00f6z\u00f6ss\u00e9gnek \u00e9s p\u00e9ld\u00e1t mutat arra, hogy hogyan ne j\u00e1rjanak el a nagy projektek. A funkcionalit\u00e1s fokozatos b\u0151v\u00edt\u00e9se \u00e9s az alkalmaz\u00e1sok fokozatos alkalmazkod\u00e1s\u00e1nak lehet\u0151s\u00e9g\u00e9nek biztos\u00edt\u00e1sa helyett, a Python 3 kiad\u00e1s\u00e1val a fejleszt\u0151ket arra k\u00e9nyszer\u00edtett\u00e9k, hogy \u00fajra\u00edrj\u00e1k a k\u00f3dot \u00e9s er\u0151forr\u00e1sokat ford\u00edtsanak k\u00fcl\u00f6nb\u00f6z\u0151 \u00e1gak fenntart\u00e1s\u00e1ra a Python 2 \u00e9s Python 3 sz\u00e1m\u00e1ra. Csak h\u00e9t \u00e9vvel a Python 3.0 kiad\u00e1sa ut\u00e1n a Python 3.5-ben val\u00f3sultak meg azok a lehet\u0151s\u00e9gek, amelyek megk\u00f6nny\u00edtett\u00e9k a v\u00e1lt\u00e1st \u00e9s biztos\u00edtott\u00e1k egyetlen k\u00f3dalap m\u0171k\u00f6d\u00e9s\u00e9t a Python 2 \u00e9s Python 3 mellett. <\/p>\n

<\/a><\/noindex><\/p>\n

Forr\u00e1s: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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