{"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\/da\/blog\/news\/tsenoj-perevoda-mercurial-na-python-3-mozhet-stat-shlejf-nepredvidennyh-oshibok","title":{"rendered":"Prisen for at overs\u00e6tte Mercurial til Python 3 kan v\u00e6re en r\u00e6kke uventede fejl","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Hovedansvarlig for versionsstyringssystemet Mercurial<\/a><\/noindex> har afsluttet<\/a><\/noindex> arbejdet med at overs\u00e6tte projektet fra Python 2 til Python 3. Selvom de f\u00f8rste fors\u00f8g p\u00e5 at portere blev gjort allerede i 2008, og tilpasningen til Python 3 begyndte i 2015 i et forceret tempo, blev den fulde mulighed for at bruge Python 3 f\u00f8rst realiseret i den seneste version af Mercurial 5.2. <\/p>\n

Forudsigelserne om stabiliteten af porten til Python 3 er ikke opmuntrende. Det forventes is\u00e6r, at der i kodningen vil opst\u00e5 sporadiske fejl i flere \u00e5r, da testene ikke d\u00e6kker 100% af kodebasen, og mange problemer er usynlige ved statisk analyse og kun viser sig under k\u00f8rsel. Desuden er mange tredjepartsudvidelser og -plugins stadig ikke oversat til Python 3.
\nDa det under porteringen blev besluttet gradvist at tilpasse koden til Python 3, mens man opretholdt st\u00f8tten til Python 2, blev koden fyldt med mange hacks for at kombinere Python 2 og 3, som efter oph\u00f8ret af Python 2's st\u00f8tte skal renses. <\/p>\n

N\u00e5r han kommenterer situationen med Python 3, mener hovedansvarlig for Mercurial, at beslutningen om at fremme den komplicerede kompatibilitet med Python 3 og p\u00e5tvinge det som et nyt, mere korrekt sprog, i mangel af faktiske banebrydende forbedringer for udviklerne, var en stor fejl, der har for\u00e5rsaget betydelig skade p\u00e5 f\u00e6llesskabet og er et eksempel p\u00e5, hvordan store projekter ikke b\u00f8r handle. I stedet for gradvist at \u00f8ge funktionaliteten og give mulighed for inkremental tilpasning af applikationer, blev udviklerne med udgivelsen af Python 3 tvunget til at omskrive koden og bruge ressourcer p\u00e5 at vedligeholde separate versioner for Python 2 og Python 3. F\u00f8rst syv \u00e5r efter udgivelsen af Python 3.0 blev der i Python 3.5 implementeret funktioner, der gjorde det muligt at lette overgange og sikre, at en enkelt kodebase fungerer med b\u00e5de Python 2 og Python 3. <\/p>\n

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

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

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