{"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\/fr\/blog\/news\/tsenoj-perevoda-mercurial-na-python-3-mozhet-stat-shlejf-nepredvidennyh-oshibok","title":{"rendered":"Le prix du passage de Mercurial \u00e0 Python 3 pourrait \u00eatre un lot d'erreurs impr\u00e9vues.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Mainteneur du syst\u00e8me de gestion de version Mercurial<\/a><\/noindex> a conclu le r\u00e9sultat<\/a><\/noindex> du travail de traduction du projet de Python 2 \u00e0 Python 3. Bien que les premi\u00e8res tentatives de portage aient \u00e9t\u00e9 entreprises d\u00e8s 2008, et qu'une adaptation acc\u00e9l\u00e9r\u00e9e pour fonctionner avec Python 3 ait commenc\u00e9 en 2015, la possibilit\u00e9 d'utilisation compl\u00e8te de Python 3 n'a \u00e9t\u00e9 r\u00e9alis\u00e9e que dans la derni\u00e8re version de Mercurial 5.2. <\/p>\n

Les pr\u00e9visions concernant la stabilit\u00e9 du port pour Python 3 sont peu encourageantes. En particulier, il est pr\u00e9vu que pendant plusieurs ann\u00e9es, des bugs al\u00e9atoires apparaissent dans le code, car les tests ne couvrent pas 100 % de la base de code, et de nombreux probl\u00e8mes ne sont pas d\u00e9tectables par analyse statique et ne se manifestent qu'\u00e0 l'ex\u00e9cution. De plus, de nombreux modules et extensions tiers restent non port\u00e9s vers Python 3.
\n\u00c9tant donn\u00e9 qu'il a \u00e9t\u00e9 d\u00e9cid\u00e9 lors du portage d'adapter progressivement le code \u00e0 Python 3 tout en gardant le support de Python 2, le code a accumul\u00e9 de nombreux hacks pour faire coexister Python 2 et 3, qui devront \u00eatre \u00e9limin\u00e9s apr\u00e8s la fin du support de Python 2. <\/p>\n

En commentant la situation avec Python 3, le mainteneur de Mercurial estime que la d\u00e9cision de promouvoir une rupture de compatibilit\u00e9 avec Python 3 et de l'imposer comme un nouveau langage plus correct, sans am\u00e9liorations r\u00e9volutionnaires pertinentes pour les d\u00e9veloppeurs, a \u00e9t\u00e9 une grande erreur causant beaucoup de tort \u00e0 la communaut\u00e9 et servant d'exemple de ce qu'il ne faut pas faire pour de grands projets. Au lieu d'une augmentation progressive des fonctionnalit\u00e9s et de permettre une adaptation incr\u00e9mentale des applications, \u00e0 la sortie de Python 3, les d\u00e9veloppeurs ont \u00e9t\u00e9 contraints de r\u00e9\u00e9crire le code et de d\u00e9penser des ressources pour maintenir des branches distinctes pour Python 2 et Python 3. Ce n'est qu'apr\u00e8s sept ans suivant la sortie de Python 3.0 que des fonctionnalit\u00e9s ont \u00e9t\u00e9 mises en \u0153uvre dans Python 3.5 qui facilitaient le processus de transition et assuraient le fonctionnement d'une base de code unique avec Python 2 et Python 3. <\/p>\n

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

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

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