René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Improve import time of various stdlib modules","articleBody":"# Feature or enhancement\r\n\r\n### Proposal:\r\n\r\nFollowing on from https://github.com/python/cpython/issues/109653, further improvements can be made to import times.\r\n\r\n### Links to previous discussion of this feature:\r\n\r\nhttps://discuss.python.org/t/deferred-computation-evalution-for-toplevels-imports-and-dataclasses/34173\r\n\r\n### For example:\r\n\r\n`importlib.metadata` is often used for tasks that need to happen at import, e.g. to enumerate/load entry point plug-ins, so it might be worth seeing if we can cut down its own import time a bit more.\r\n\r\n`importlib.metadata` imports `zipfile` at the top for a function that won't be called in the vast majority of cases.  It also imports `importlib.abc`, which in turn imports `importlib.resources`, to subclass an ABC with a single, non-abstract method - I assume redefining the method in `importlib.metadata` would be harmless.  Some other less frequently-used imports which are only accessed once or twice, such as `json`, could also be tucked away in their calling functions.\r\n\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-122725\n* gh-123520\n* gh-121424\n* gh-126979\n* gh-128732\n* gh-128736\n* gh-128738\n* gh-128858\n* gh-128898\n* gh-128899\n* gh-128907\n* gh-128981\n* gh-129118\n* gh-129427\n* gh-129428\n* gh-129447\n* gh-129448\n* gh-129765\n* gh-129811\n* gh-129860\n* gh-129925\n* gh-130056\n* gh-130201\n* gh-130204\n* gh-130205\n* gh-131796\n* gh-131953\n* gh-131956\n* gh-132024\n* gh-132025\n* gh-132028\n* gh-132031\n* gh-132035\n* gh-132036\n* gh-132037\n* gh-132046\n* gh-132059\n* gh-132060\n* gh-132103\n* gh-132614\n* gh-133057\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/layday","@type":"Person","name":"layday"},"datePublished":"2024-05-08T13:13:05.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":71},"url":"https://github.com/118761/cpython/issues/118761"}