8000 lib_updater --quick-upgrade by youknowone · Pull Request #6695 · RustPython/RustPython · GitHub
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lib_updater --quick-upgrade #6695

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Merged
youknowone merged 1 commit into from
Jan 10, 2026
Merged

lib_updater --quick-upgrade #6695

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42 changes: 40 additions & 2 deletions scripts/lib_updater.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,9 +2,19 @@
__doc__ = """
This tool helps with updating test files from CPython.

Quick Upgrade
-------------
./{fname} --quick-upgrade cpython/Lib/test/test_threading.py
./{fname} --quick-upgrade ../somewhere/Lib/threading.py

Any path containing `/Lib/` will auto-detect the target:
-> Extracts patches from Lib/... (auto-detected from path)
-> Applies them to the source file
-> Writes result to Lib/...

Examples
--------
To move the patches found in `Lib/test/foo.py` to ` ~/cpython/Lib/test/foo.py` then write the contents back to `Lib/test/foo.py`
To move the patches found in `Lib/test/foo.py` to `~/cpython/Lib/test/foo.py` then write the contents back to `Lib/test/foo.py`

>>> ./{fname} --from Lib/test/foo.py --to ~/cpython/Lib/test/foo.py -o Lib/test/foo.py

Expand Down Expand Up @@ -288,6 +298,12 @@ def build_argparse() -> argparse.ArgumentParser:
)

patches_group = parser.add_mutually_exclusive_group(required=True)
patches_group.add_argument(
"--quick-upgrade",
help="Quick upgrade: path containing /Lib/ (e.g., cpython/Lib/test/foo.py)",
type=pathlib.Path,
metavar="PATH",
)
patches_group.add_argument(
"-p",
"--patches",
Expand All @@ -301,7 +317,7 @@ def build_argparse() -> argparse.ArgumentParser:
type=pathlib.Path,
)

group = parser.add_mutually_exclusive_group(required=True)
group = parser.add_mutually_exclusive_group(required=False)
group.add_argument(
"--to",
help="File to apply patches to",
Expand All @@ -322,6 +338,28 @@ def build_argparse() -> argparse.ArgumentParser:
parser = build_argparse()
args = parser.parse_args()

# Quick upgrade: auto-fill --from, --to, -o from path
if args.quick_upgrade is not None:
path_str = str(args.quick_upgrade)
lib_marker = "/Lib/"

if lib_marker not in path_str:
parser.error(f"--quick-upgrade path must contain '/Lib/' (got: {path_str})")

idx = path_str.index(lib_marker)
lib_path = pathlib.Path(path_str[idx + 1 :])

args.gather_from = lib_path
args.to = args.quick_upgrade
if args.output == "-":
args.output = str(lib_path)

# Validate required arguments
if args.patches is None and args.gather_from is None:
parser.error("--from or --patches is required (or use --quick-upgrade)")
if args.to is None and not args.show_patches:
parser.error("--to or --show-patches is required")

if args.patches:
patches = {
cls_name: {
Expand Down
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