René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"**kwargs unexpectedly parses flags for later chained method","articleBody":"Suppose we have the following program\n\n```python\nfrom dataclasses import dataclass\n\n@dataclass\nclass MyClass:\n    x: int\n\n    def transform(self, **kwargs):\n        return MyClass(self.x * kwargs.get(\"multiplier\", 2))\n\n    def do_something(self, msg):\n        print(f\"{msg}: {self.x}\")\n\nmy_obj = MyClass(3)\n```\n\nAnd we call it with `python -m fire my_module my_obj transform --multiplier=3 do_something --msg=\"test\"`, then the `--msg` is parsed when calling `transform` into the `kwargs` dict. Then it errors saying `--msg` is missing. Can we instead support parsing flags before the next chained method call? The kwargs is useful for example, to transform the object in ways that only implementation classes know what to do. \n\nMy current workarounds are (1) pass msg as positional arg to `do_something`, (2) have `do_something` take `**kwargs` and call `transform` within it. Neither is ideal as (1) would surprise anyone who uses my code and (2) adds extra plumbing that could be avoided.","author":{"url":"https://github.com/louis-shao","@type":"Person","name":"louis-shao"},"datePublished":"2026-04-03T21:43:28.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/659/python-fire/issues/659"}