|
| 1 | +import sys |
| 2 | +import runpy |
| 3 | + |
| 4 | +# Usage: |
| 5 | +# python runner.py <module> [args...] |
| 6 | +# Example: |
| 7 | +# python runner.py morebuiltins.cmd.log_server |
| 8 | +# uvx: |
| 9 | +# uvx morebuiltins morebuiltins.cmd.log_server |
| 10 | + |
| 11 | + |
| 12 | +import importlib.util |
| 13 | + |
| 14 | + |
| 15 | +def runner(mod_name: str | None = None, argv: list[str] | None = None) -> None: |
| 16 | + # Read module name and args from command line if not provided |
| 17 | + if mod_name is None: |
| 18 | + if len(sys.argv) < 2: |
| 19 | + print("Usage: python runner.py <module> [args...]") |
| 20 | + raise SystemExit(2) |
| 21 | + mod_name = sys.argv[1] |
| 22 | + argv = sys.argv[2:] |
| 23 | + if argv is None: |
| 24 | + argv = [] |
| 25 | + |
| 26 | + # Mimic `python -m <module>` by setting sys.argv |
| 27 | + orig_argv = sys.argv[:] |
| 28 | + sys.argv = [mod_name] + argv |
| 29 | + try: |
| 30 | + # Prefer private API to replicate `python -m` semantics (incl. package __main__) |
| 31 | + run_as_main = getattr(runpy, "_run_module_as_main", None) |
| 32 | + if run_as_main is not None: |
| 33 | + # We already set sys.argv above; prevent _run_module_as_main from altering it again |
| 34 | + run_as_main(mod_name, alter_argv=False) |
| 35 | + return |
| 36 | + |
| 37 | + # Fallback: manually handle package __main__ |
| 38 | + spec = importlib.util.find_spec(mod_name) |
| 39 | + if spec is None: |
| 40 | + raise ModuleNotFoundError(f"No module named '{mod_name}'") |
| 41 | + |
| 42 | + target = mod_name |
| 43 | + if spec.submodule_search_locations is not None: |
| 44 | + # Package: run <pkg>.__main__ |
| 45 | + main_name = f"{mod_name}.__main__" |
| 46 | + if importlib.util.find_spec(main_name) is None: |
| 47 | + raise ModuleNotFoundError(f"No module named '{main_name}'") |
| 48 | + target = main_name |
| 49 | + |
| 50 | + # Run target module as __main__ |
| 51 | + runpy.run_module(target, run_name="__main__", alter_sys=True) |
| 52 | + finally: |
| 53 | + # Restore original argv to avoid side effects |
| 54 | + sys.argv = orig_argv |
| 55 | + |
| 56 | + |
| 57 | +if __name__ == "__main__": |
| 58 | + runner() |
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