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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Code objects, function objects and generator object contain quite a lot of redundant information","articleBody":"There is a quite a lot of redundancy in code, function and generator objects.\r\n\r\n### Intra-object redundancy\r\n\r\n1. Code objects have four fields ,`co_nlocalsplus`, `co_nplaincellvars`, `co_nlocals`, `co_nfreevars`. Any of these fields can be computed from the other three.\r\n2. Code objects have a qualified name and a name. The name is always the suffix of the qualified name. Changing this to qualifying prefix and name would save space and allow sharing.\r\n3. The defaults and keyword defaults for a function are separate and the keyword defaults are a dict. They could be combined into a single array.\r\n4. Generator objects have a `gi_code` field, which is redundant, as the frame contains a reference to the code object.\r\n\r\n### Inter-object redundancy\r\n\r\n1. Functions and generators have qualified name and name fields, which are almost always the same as the underlying code object. These should be lazily initialized\r\n\r\n\r\n\r\n\r\n\r\n\u003c!-- gh-linked-prs --\u003e\r\n### Linked PRs\r\n* gh-100721\r\n* gh-100749\n\u003c!-- /gh-linked-prs --\u003e\r\n","author":{"url":"https://github.com/markshannon","@type":"Person","name":"markshannon"},"datePublished":"2023-01-03T16:36:24.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/100719/cpython/issues/100719"}